Dynamic Cold Therapy Cuboid Plastic Cold Plunge Tub (Standard)
Dynamic Cold Therapy Cuboid Plastic Cold Plunge Tub (Standard)
- Regular price
- $4,999.00
- Regular price
- $5,999.00
- Sale price
- $4,999.00
- Unit price
- per
Found it lower? We'll match it, before or after you buy.
Send us a link to the lower price. If it is the same model, new and in stock at an authorized U.S. online retailer, we match it. Already ordered? If it was lower on your order date, claim the difference within 30 days.
Excludes sale pricing, marketplace sellers and later price drops.
Read the full price match terms →A plunge tub with a PVC liner in a cedar-trimmed cabinet, green or grey.
- About 120 gallons behind the liner
- 50″ × 30″ × 31.5″, Pacific Cedar trim
- Optional 0.8 or 1.0 HP Premier chiller
Curbside delivery, insured in transit
Couldn't load pickup availability
Talk to a Recovery Specialist
1-888-500-5675
How does delivery work?
How does delivery work?
Free freight to the lower 48. Your order ships on a strapped pallet by insured LTL freight from the manufacturer's California warehouse.
When it ships. Orders are processed within 2 to 5 business days depending on the brand, and delivery to most addresses in the contiguous US takes 5 to 14 business days after shipment. Transit times are carrier estimates, not guarantees.
How you will know. You get a tracking number by email as soon as your order leaves the warehouse. Most carriers then call 24 to 48 hours ahead to lock in a four hour window, and some send an email or text the morning of delivery instead. Respond promptly either way, because missed attempts trigger terminal storage fees.
How it arrives. A 53 foot semi truck arrives at your curbside and the driver delivers the pallet to the curb. Liftgate service is not included as standard, and standard delivery does not include bringing the equipment inside, up stairs, or unpacking. Someone must be present to sign.
If it arrives damaged. Walk around the pallet and check every box before signing the Bill of Lading. Cosmetic damage can be accepted, but if a carton is punctured or crushed, refuse that item and call us on (888) 500-5675 while the driver is still there. Note the damage on the Bill of Lading, photograph it, and contact us within 48 hours. Once the damage is documented on the Bill of Lading we can file a valid freight claim and ship a replacement at no cost to you. Signing a clean Bill of Lading releases the carrier, and claims filed after one are routinely denied. If you refuse for a reason other than damage, or without contacting us first, return freight costs may become your responsibility.
Where it ships. Free freight covers standard residential curbside delivery within the contiguous 48 states. Hawaii, Alaska and Canada are not available at standard checkout, so contact us before ordering for a freight quote.
What does the warranty cover?
What does the warranty cover?
How long. Cold plunge tubs carry a 1-year limited warranty, when bought from an authorized dealer in undamaged original packaging.
What is covered. Defects in materials and workmanship. The polycarbonate insert, the wooden shell and trim and all other components each carry 1 year, and chillers carry a 1-year manufacturer warranty. Insulated covers carry 1 year, neoprene hose covers 90 days, and replacement filters are consumables with no warranty.
Labor. Any labor cost associated with a claim is not covered. Coverage applies to the original purchaser and is not transferable.
What you have to do. Keep the water balanced and do not let it freeze. Corrosion from poor water maintenance and freeze damage are the two most common reasons a claim is declined. Keep your proof of purchase.
What is not covered. Fading or discoloration from UV exposure, damage from storage in below-freezing temperatures, and corrosion or discoloration caused by lack of water maintenance.
What if I need to return it?
What if I need to return it?
30 days from delivery. The item must come back new, unused and in its original packaging with all components, hardware and accessories. Anything assembled, used or modified cannot be returned, and electronic components such as power supplies and control panels are non returnable under manufacturer policy regardless of condition.
What a return costs. The manufacturer may charge a 20 percent restocking fee, and you are responsible for the return freight. The original shipping cost is not deducted from your refund. Any storage or carrier routing fees incurred during the return are the buyer's responsibility.
Damaged on arrival. A different process, and you are fully protected. If you accepted the delivery and documented the damage on the Bill of Lading, we handle the freight claim and ship a replacement at no cost, with no restocking fee and no return shipping.
Cancelling before it ships. No fee as long as we have not yet submitted your order to the manufacturer. After we submit it but before it ships, an administrative fee of up to 5 percent may apply, and we waive it whenever we are not charged.
To start a return. Email your order number to sales@recoveryroomdirect.com and we issue a Return Merchandise Authorization number within one business day. Write it clearly on every box, because the warehouse will not accept returns without it. Refunds are issued within 5 business days of inspection.
Which brands. Applies to all Golden Designs Inc. brands: Dynamic Saunas, Maxxus Saunas and Dynamic Cold Therapy.
PRODUCT DESCRIPTION
The Cold Plunge Tub That Gets You Started Right — in Green or Grey
The entry point to the DCT Cuboid line. Same 304 stainless steel exterior cabinet. Same Pacific Cedar trim. Same chiller-ready 3/4" ports. A PVC interior keeps this the most accessible tub in the lineup while everything you see from the outside stays premium — and it ships in your choice of Green or Grey.
Free freight delivery included.
A Straightforward Look at What You’re Getting
The Cuboid Plastic is the most accessible point of entry into the DCT cold plunge lineup. Here’s the honest comparison you need before deciding.
The interior immersion surface is PVC — not stainless steel. The exterior cabinet and frame remain 304 stainless steel and Pacific Cedar, so the tub looks and feels premium from the outside. The trade-off: PVC holds up well under moderate use, but it is not as easily sanitized as bare 304 stainless and will show wear sooner under intensive daily use protocols.
If you’re committed to daily cold therapy for years and want the most durable interior, the Cuboid Standard 304 SS is worth the step up. If you want a functional, good-looking cold plunge to start your practice — or you’re drawn to the Green or Grey color options — this is a solid choice at a honest price.
Premium Where It Shows — Practical Where It Counts
The Cuboid Plastic shares its exterior construction with the stainless models. What changes is the interior immersion surface — and understanding that distinction helps you buy the right tub for your use case.
The outer cabinet is the same 304 stainless steel used on the Standard and XL models — weather-resistant, corrosion-resistant, and designed for outdoor placement. The interior immersion surface is PVC, which keeps the price point accessible while maintaining a premium exterior appearance.
Pacific Cedar trim runs the full exterior — the same moisture-resistant, naturally antimicrobial wood used on the Standard and XL. It adds structural support to the cabinet and weathers gracefully in outdoor environments without needing treatment.
The same 3/4” IN/OUT port system as the stainless models. Compatible with both DCT 0.8HP and 1.0HP WiFi chillers without adapters. Also supports ice-over-water sessions without a chiller — gravity fill and drain work independently.
Ready to Plunge on Day One
The Cuboid ships with the accessories needed for safe, immediate use — no follow-up purchases required before your first session.
4” Insulated Cover (Included)
The custom insulated cover fits the Cuboid’s 50” exterior and includes child safety latches. It maintains water temperature between sessions — which matters most when running a chiller — and prevents unsupervised access. A replacement cover is available separately in our store if needed.
Compatible with the DCT Chiller Ecosystem
The 0.8HP WiFi Chiller provides consistent automated temperature control for daily residential use. The 1.0HP handles higher throughput. Both connect directly to the 3/4” ports. Select a With Premier Chiller option above to order the tub and chiller together as one system, or call (888) 500-5675 for a recommendation based on your protocol.
Pacific Cedar Step Stool (Included)
Entry and exit from a cold plunge tub are more demanding than they look — especially on the way out when your body is actively responding to the temperature change. The included cedar step provides the right ergonomic height for a safe, repeatable process.
Add the Premier Chiller — One Complete Cold Plunge System
Choose a With Premier Chiller configuration above and your Cuboid Plastic ships as a complete system — tub and DCT’s Premier Edition Chiller & Heater together, connected in minutes with the included quick-connect hoses.
37°F Cold to 85°F Warm — One Unit
The Premier Edition both chills and heats, with temperature adjustability from 37°F to 85°F. Control it from the splash-proof digital touchscreen or remotely through the Tuya Smart WiFi app — set your target before you leave the gym and step into ready water.
0.8 HP or 1.0 HP — Sized to Your Routine
The 0.8 HP unit handles plunges up to 135 gallons, pulling water down 1–3°F every 30 minutes — well matched to the Cuboid Plastic’s ~120-gallon capacity for daily residential use. The 1.0 HP steps up to 150 gallons at 1–3°F every 20 minutes (both depending on ambient temperature and water volume) — the right call for hot climates, garage installs, or back-to-back sessions.
Clean Water, Automatically
Two-stage filtration with replaceable 20-micron filters, an automated natural ozone sanitation system, and a built-in strainer keep water clear between full changes. Every Premier runs on a standard 120V outlet with built-in GFCI, is rated for indoor and covered outdoor use, and carries a 1-year warranty with lifetime product support.
Prefer to source a chiller separately or use ice? Tub Only ships chiller-ready with capped 3/4” ports — you can add a chiller at any time.
Building a Cold Therapy Habit That Sticks
The Cuboid is designed for consistent, daily use. Here are three protocols that fit naturally into a structured recovery week.
A 2–4 minute immersion before caffeine. Research on cold water immersion suggests it may support norepinephrine and cortisol awakening responses, helping to establish mental clarity early in the day. This is often the session that turns cold therapy from a habit into a non-negotiable.
Target: 50–55°F. Duration: 2–4 min. Control your breathing — the cold shock response is what you’re training through.
A 10–15 minute immersion after training. The 43.5” interior covers full immersion for buyers up to 5’8”, reaching the lower extremities where micro-tears, systemic inflammation, and neural fatigue accumulate after heavy sessions. Research suggests cold immersion may support recovery between training days by modulating the acute inflammatory response.
Target: 45–55°F. If hypertrophy is the goal, wait 30–60 min post-lift before plunging.
A 5–7 minute session 90 minutes before sleep may support the core body temperature drop that precedes deep sleep onset. Research on thermoregulation and sleep architecture suggests this may improve sleep quality without disrupting circadian rhythm.
Target: 55–60°F. Slightly warmer than morning — you’re winding down the nervous system, not activating it.
Who the Cuboid Plastic Is the Right Fit For
Three buyer profiles where this model is the practical, honest choice.
You’ve decided to start cold therapy. You want a real plunge tub — not a chest freezer workaround — but you’re not ready to spend more on stainless before you know how your body responds and how consistently you’ll actually use it. The Cuboid gives you a proper cold plunge setup at the lowest price point in the DCT lineup. If daily cold therapy becomes a locked-in habit, you can always step up to stainless later.
You’re designing a backyard recovery space and the color of your cold plunge tub matters to you. The stainless models only come in one look. The Cuboid Plastic ships in Green or Grey — letting you match your outdoor aesthetic, whether that’s a lush garden setup where the green blends naturally, or a clean modern concrete patio where the grey reads as intentional design. Cold therapy works equally well in either finish.
You’ve priced out cold plunge studios at $25–$50 per session and the math on ownership is clear. You want a purpose-built cold plunge — not a DIY solution — at the lowest price that still includes a cover, a step, chiller-ready ports, and a one-year warranty. That’s this tub. Questions about what you’re getting on this tub vs. the Standard SS? Call us at (888) 500-5675 — we’ll give you a straight answer.
The Lowest Cost-Per-Session in the Cuboid Lineup
The Cuboid Plastic delivers the fastest payback of any tub in the DCT Cuboid series against commercial cold therapy pricing.
Available in Green & Grey
The only Cuboid model with color options. Both finishes share identical specs — the choice is purely aesthetic. Contact us to confirm current availability before ordering.
Earthy, natural tone — blends well in garden settings, landscaped patios, and lush outdoor spaces.
Clean, neutral tone — pairs well with concrete, stone, and modern outdoor design schemes.
To specify your color preference, leave a note at checkout or call (888) 500-5675. Color availability is subject to stock — we’ll confirm your preference before the order ships.
Choose Your Cuboid
Three tubs. Same DCT engineering philosophy. Different interior materials and interior lengths. Here’s how to find the right fit before you order.
Pacific Cedar exterior with a PVC interior. Same exterior dimensions as the Standard. The entry point for buyers whose primary goal is cold immersion, not material longevity or hygiene intensity.
Best for: Budget-conscious buyers, lighter use frequency, indoor placement
Currently Viewing304 nano-coated stainless steel interior and exterior. 43.5” interior length. The right choice for buyers 5’8” and under who want full stainless durability without the XL footprint — at a lower price point.
Best for: Most buyers, moderate height, residential daily use
View Cuboid Standard SS304 nano-coated stainless steel throughout. 48.5” interior — five inches longer than the Standard. For taller athletes, commercial use, or buyers who require full-leg immersion without compromise.
Best for: Buyers 5’9”+, commercial protocols, complete lower-body immersion
View Cuboid XLCuboid Plastic vs. Standard SS vs. XL SS — Full Comparison
All three Cuboid models share the same exterior dimensions and Pacific Cedar trim. The differences are interior material, interior length, and price.
| Cuboid Plastic | Cuboid Standard SS | Cuboid XL SS | |
|---|---|---|---|
| Interior Material | PVC Plastic | 304 Nano SS | 304 Nano SS |
| Exterior Cabinet | 304 SS + Pacific Cedar | 304 SS + Pacific Cedar | 304 SS + Pacific Cedar |
| Exterior Length | 50” | 50” | 55” |
| Interior Length | ~43.5” | ~43.5” | ~48.5” |
| Exterior Width / Height | 30” W × 31.5” H | 30” W × 31.5” H | 32.5” W × 31.5” H |
| Color Options | Green & Grey | Stainless only | Stainless only |
| Approximate Capacity | ~120 gal | ~120 gal | ~150 gal |
| Insulated Cover | ✓ Included | ✓ Included | ✓ Included |
| Pacific Cedar Step Stool | ✓ Included | ✓ Included | ✓ Included |
| 3/4” Chiller Ports | ✓ | ✓ | ✓ |
| Chiller Included | Available as add-on | Available as add-on | Available as add-on |
| 1-Year Warranty | ✓ | ✓ | ✓ |
Full Specifications
| Exterior Dimensions | 50” L × 30” W × 31.5” H |
| Interior Dimensions | ~43.5” L × 24” W × 28.5” H (approximate — verify before ordering) |
| Interior Material | PVC (Plastic) |
| Exterior Cabinet | 304 Stainless Steel |
| Exterior Trim | Pacific Cedar |
| Available Colors | Green, Grey |
| Water Capacity | ~120 gallons |
| Drain / Fill Connections | 3/4” IN / 3/4” OUT (standard fittings) |
| Included Cover | 4” insulated cover with child safety latches |
| Included Step | Pacific Cedar step stool |
| Compatible Chillers | DCT 0.8HP WiFi Chiller & Heater; DCT 1.0HP WiFi Chiller & Heater |
| Chiller Included | Available as add-on — select a With Premier Chiller configuration above |
| Indoor / Outdoor | Both |
| Manufacturer Warranty | 1 year |
| Brand | Dynamic Cold Therapy (Golden Designs Inc.) |
Interior dimensions are approximate. Contact us at (888) 500-5675 to confirm before ordering if you have specific space or placement constraints.
What’s in the Box
DCT Cuboid — 50” exterior, PVC interior, 304 SS exterior cabinet, Pacific Cedar trim, 3/4” IN/OUT ports. Ships in your chosen color (Green or Grey)
Custom-fit insulated cover with child safety latches — sized for the Cuboid 50” exterior
High-quality Pacific Cedar step stool for safe ergonomic entry and exit
Choosing a With Premier Chiller configuration? Your order also includes the Premier Edition Chiller & Heater (0.8 HP or 1.0 HP), a pair of quick-connect hoses, a pre-installed 20-micron filter plus one replacement, and a filter housing wrench. Tub Only ships chiller-ready — add a 0.8 HP or 1.0 HP WiFi chiller separately at any time.
Shipping & Delivery
The Cuboid ships via freight carrier with free curbside delivery included. Estimated transit: 5–10 business days after dispatch. You will receive tracking by email when your order ships. Curbside means the carrier places the pallet at your curb or driveway.
Threshold delivery, inside placement, or room-of-choice setup is available as a paid Professional Setup & Assembly upgrade. To discuss options, call (888) 500-5675 before ordering.
Filled weight is approximately 1,200 lbs (~120 gallons). Concrete slabs and reinforced patios handle this without issue. Elevated decks should be assessed by a contractor. Call (888) 500-5675 with any questions about your specific site.
Arrives fully assembled. Chiller hose connections use standard 3/4” fittings. Fill with a garden hose. Drain via the 3/4” OUT port to an appropriate outdoor area or floor drain.
DCT Cuboid Plastic — Frequently Asked Questions
What is the difference between the Cuboid Plastic and the Cuboid Standard 304 SS?
Both models have the same exterior dimensions (50” L × 30” W × 31.5” H), the same 304 stainless steel exterior cabinet, Pacific Cedar trim, 3/4” chiller ports, insulated cover, and cedar step stool. The difference is the interior immersion surface: the Plastic uses PVC; the Standard uses 304 nano-coated stainless steel. The Plastic costs less and comes in Green or Grey. The Cuboid Standard SS has a more durable interior that is easier to sanitize to a high standard under intensive daily use.
How do I specify Green or Grey when ordering?
Leave a note in the order comments at checkout with your color preference, or call us at (888) 500-5675 before placing your order. Color availability is subject to current stock — we will confirm your preference and availability before the order ships. Both colors are identical in specifications and price.
Do I need a chiller, or can I use ice in the Cuboid Plastic?
You can use either. The 3/4” IN/OUT ports support direct chiller connectivity, but the tub also works perfectly with ice-over-water sessions — fill with cold water and add ice to reach your target temperature. A chiller provides consistent automated temperature control without daily ice management. The DCT 0.8HP WiFi Chiller handles most residential protocols; the 1.0HP handles higher-volume use. Select a With Premier Chiller option above to add either one to this order as a complete system, or call (888) 500-5675 for a recommendation.
Can I order the Cuboid Plastic with a chiller included?
Yes — select a With Premier Chiller configuration and your order ships as a complete system: the tub plus DCT’s Premier Edition Chiller & Heater in your choice of 0.8 HP (plunges up to 135 gallons, 1–3°F every 30 minutes) or 1.0 HP (up to 150 gallons, 1–3°F every 20 minutes, depending on ambient temperature and water volume). The Premier runs on a standard 120V outlet with built-in GFCI, connects through the included quick-connect hoses, and is controlled from its splash-proof touchscreen or the Tuya Smart app. Tub Only orders are chiller-ready, so you can also add a chiller later.
Is the PVC interior durable enough for daily cold therapy?
PVC is a proven, food-safe material that holds up well under regular cold water immersion. It performs reliably for buyers who use the tub three to five times per week and follow standard cleaning protocols. Where PVC falls short compared to 304 stainless is under intensive daily use with aggressive sanitization cycles — over years, a PVC interior will show wear sooner than bare stainless. If daily use with rigorous hygiene standards is your plan from day one, the Cuboid Standard SS is the more durable long-term investment.
Is the insulated cover included, or is it sold separately?
The 4” insulated cover with child safety latches ships with the Cuboid — it is included at no additional cost. The separately listed cover in our store is a replacement unit. You do not need to purchase a cover when ordering the Cuboid Plastic.
Is the Cuboid Plastic suitable for outdoor year-round use?
Yes. The 304 stainless exterior cabinet and Pacific Cedar trim are designed for outdoor durability. The PVC interior is also weather-resistant. In climates with temperatures below 32°F, drain the tub if no chiller is running — standing water in the lines can freeze and cause damage. Call (888) 500-5675 for winterization guidance specific to your region.
Can the Cuboid Plastic be used alongside a medical or physical therapy program?
The Cuboid Plastic is a wellness device, not a medical device. It is not intended to diagnose, treat, cure, or prevent any medical condition. Many buyers use it alongside — not instead of — clinical care during recovery phases. If you are under the care of a physician or physical therapist, discuss how cold water immersion fits your protocol before starting. Certain cardiovascular conditions, Raynaud’s syndrome, and open wounds contraindicate cold immersion — consult a qualified healthcare professional before beginning any cold therapy protocol.
Can I use HSA or FSA funds for the Cuboid Plastic?
Cold plunge tubs are listed as eligible for HSA or FSA reimbursement with a Letter of Medical Necessity and a prescription. We do not accept HSA or FSA cards at checkout — you pay with an ordinary card and claim the amount back from your plan administrator. Eligibility is determined individually. See how HSA and FSA reimbursement works here.
Official Dynamic Cold Therapy authorized retailer — manufacturer's warranty backed
Curbside freight delivery included — Professional Setup & Assembly upgrade available at a flat $349
Real people, real answers — (888) 500-5675
The Cold Plunge Tub That Gets You Started — Your Color, Your Budget
304 SS exterior cabinet. Pacific Cedar trim. Cover and step included. Green or Grey. Free freight delivery included.
See our Cold Plunge Buying Guide, or browse the full cold plunge collection.
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Complete Your Recovery Setup
The add-ons our customers choose most.
