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Dynamic Cold Therapy Cuboid Plastic Cold Plunge Tub (Standard)

Dynamic Cold Therapy Cuboid Plastic Cold Plunge Tub (Standard)

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Authorized Dynamic Cold Therapy Dealer Full Manufacturer's Warranty Included
Regular price
$4,999.00
Regular price
$5,999.00
Sale price
$4,999.00
You Save: $1,000.00 (17%)
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Shipping & Delivery

Your order ships free from the manufacturer's California warehouse on a strapped pallet via insured LTL freight. Orders are processed within 2 business days, and delivery to most addresses in the contiguous US takes 5–7 business days after shipment. You'll receive a tracking number by email as soon as your order leaves the warehouse.

Scheduling your delivery. The freight carrier will reach out before the truck rolls — most carriers call 24–48 hours ahead to lock in a four-hour delivery window. Some carriers (including R+L) send an email or text the morning of delivery instead. Respond promptly either way. If the carrier can't reach you and misses 2–3 delivery attempts, terminal storage fees kick in and the item may be returned at your expense.

What to expect at delivery. A 53-foot semi-truck arrives at your curbside. The driver uses the truck's built-in liftgate to lower the pallet to ground level — that's where their responsibility ends. Standard delivery does not include bringing the equipment inside, up stairs, or unpacking. Plan ahead: have help available to move it once it's off the truck. Someone must be present to sign for the delivery.

CRITICAL — inspect before you sign. Walk around the pallet and check every box before signing the Bill of Lading. Note any scratches, dents, or scuff marks directly on the delivery receipt. If you see a large hole, crushed corner, or obvious structural damage, refuse the delivery — we'll ship a replacement at no cost. Signing a clean BOL releases the freight carrier from all liability. A damage claim cannot be filed after a clean signature. This takes two minutes and fully protects you.

Good to know. If your address changes after the order ships, contact us immediately — carrier re-routing fees may apply and will add transit time. If your location cannot comfortably accommodate a 53-foot semi-truck (island, remote road, gated community, narrow access), contact us before ordering so we can arrange an appropriate solution.

Free freight applies to standard residential curbside delivery within the contiguous 48 US states. Hawaii, Alaska, and Canada are not available at standard checkout — contact us before ordering for a freight quote. Transit times are carrier estimates, not guarantees. Applies to all Golden Designs Inc. brands: Dynamic Saunas, Maxxus Saunas, and Dynamic Cold Therapy. View our full Shipping & Delivery policy →

Return Policy

We stand behind every product we sell. If it's not the right fit, you have 30 days from delivery to return it — and if you need to cancel before it ships, you can do that within 24 hours of purchase at no charge.

How to start a return. Email us your order number at sales@recoveryroomdirect.com and we'll issue a Return Merchandise Authorization (RMA) number within one business day. Write that number clearly on the outside of every box before handing it to the carrier — the warehouse will not accept returns without it.

Condition required. The item must come back new, unused, and in its original packaging with all components, hardware, and accessories included. Items that have been assembled, used, or modified cannot be returned. Electronic components — power supplies, control panels, and accessories — are non-returnable under manufacturer policy regardless of condition.

What it costs to return. We want to be upfront about this: returning large freight equipment has real costs. The manufacturer charges a 20% restocking fee on all returns, and you are responsible for the return freight. If your original order shipped free, the actual outbound freight cost is also deducted from your refund. Any storage or carrier routing fees incurred during the return process are the buyer's responsibility as well. Once the item arrives at the warehouse and passes inspection, your refund is issued within 5 business days to your original payment method.

Damaged on arrival? That's a different process entirely — and you're fully protected. If you refused the delivery and documented the damage on the Bill of Lading, we handle the freight claim and ship you a replacement at no cost. No restocking fee, no return shipping. This is exactly why we ask you to inspect carefully before you sign.

The manufacturer warranty covers defects that arise after the 30-day return window. See full warranty terms at goldendesigninc.com. Questions about your order? Call us at 1-888-500-5675 or email sales@recoveryroomdirect.com — Mon–Sat, 9am–6pm EST. Applies to all Golden Designs Inc. brands: Dynamic Saunas, Maxxus Saunas, and Dynamic Cold Therapy. View our full Return Policy →

Price Match Guarantee

Found it for less at an authorized dealer? We'll match it — before or after you buy.

We're factory-authorized for every brand we carry. If you find this exact model listed at a lower price by another authorized retailer, send us the link and we'll match it before you check out. Already purchased? We'll refund the difference within 30 days of your order date.

To claim: Email us or call with a link or screenshot showing the lower price, the retailer name, and model number. We'll confirm authorization status and apply the match — typically same business day.

Applies to authorized U.S. retailers only. Excludes open-box, clearance, used, and bundle pricing. Item must be in stock at the competing retailer.

View our full price match terms

Free Freight Shipping, Every Order

Ships free to all 48 states via fully insured freight. White-glove inside placement available on select items.

Lowest Authorized Price, Guaranteed

Find it for less at any authorized dealer — show us the quote and we'll match it on the spot.

Talk to Someone Who Actually Knows

Our team knows this equipment in depth. Call or chat Mon–Sat for straight answers before you buy.

Authorized Dealer. Full Manufacturer Warranty.

Factory-authorized for every brand we carry. Legitimate warranty, genuine parts, zero grey-market risk.

DCT Cuboid Plastic cold plunge tub in green with Pacific Cedar step stool and open valves
Dynamic Cold Therapy — Cuboid

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 the price at $4,999 while everything you see from the outside stays premium — and it ships in your choice of Green or Grey.

Shop Pay installments, powered by Affirm, available at checkout — spread the investment over time. Free freight delivery included.

43.5"Interior Length
~140Gallon Capacity
2Color Options
304SS Exterior Cabinet
1-YrManufacturer Warranty
FreeFreight Delivery

A Straightforward Look at What You’re Getting

At $4,999, 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 at $5,499 is worth the $500 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.

3/4-inch connection ports on DCT Cuboid Plastic cold plunge tub

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.

304 stainless steel exterior cabinet and spa connection ports on DCT Cuboid Plastic
Exterior Cabinet
304 Stainless Steel Outside

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 and step stool on DCT Cuboid Plastic cold plunge tub in green
Frame & Trim
Pacific Cedar Exterior Trim

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.

DCT Cuboid Plastic in grey with chiller connected to 3/4-inch ports
Connectivity
3/4” Chiller-Ready Ports

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.


DCT Cuboid Plastic cold plunge tub in grey with DCT chiller connected and valves open

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. Chillers are sold separately — add one at checkout 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.


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.

6:00 AM — Morning Activation
Cortisol & Clarity Protocol

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.

Post-Workout — Recovery Window
Muscle & Inflammation Protocol

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.

8:00 PM — Evening Wind-Down
Core Temperature & Sleep Protocol

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.

The New Cold Practitioner
Committed, not yet obsessed.

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 $5,499 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.

The Outdoor Setup Builder
Aesthetics matter as much as function.

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.

The Budget-Conscious Buyer
Maximum cold therapy value for the investment.

You’ve priced out cryotherapy spas at $50–$80 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 for $4,999 vs. $5,499? Call us at (888) 500-5675 — we’ll give you a straight answer.


The Lowest Cost-Per-Session in the Cuboid Lineup

At $4,999, the Cuboid Plastic delivers the fastest payback of any tub in the DCT Cuboid series against commercial cold therapy pricing.

$13.69
Cost per day over 12 months of daily use
63–100
Sessions to break even vs. spa pricing at $50–$80/session
2–3 mo
Payback period at daily use

HSA and FSA funds may be applicable to wellness equipment — check with your plan provider before purchase. Shop Pay installments, powered by Affirm, are available at checkout to spread the $4,999 investment over time.


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.

DCT Cuboid Plastic cold plunge tub in green finish with Pacific Cedar step stool
Green

Earthy, natural tone — blends well in garden settings, landscaped patios, and lush outdoor spaces.

DCT Cuboid Plastic cold plunge tub in grey finish with DCT chiller connected
Grey

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.


Cuboid 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
$4,999
Cuboid Standard SS
$5,499
Cuboid XL SS
$5,999
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 30” W × 31.5” H
Color Options Green & Grey Stainless only Stainless only
Approximate Capacity ~140 gal ~140 gal ~180 gal
Insulated Cover ✓ Included ✓ Included ✓ Included
Pacific Cedar Step Stool ✓ Included ✓ Included ✓ Included
3/4” Chiller Ports
Chiller Included Sold separately Sold separately Sold separately
1-Year Warranty
Honest take: The $500 difference between this and the Cuboid Standard SS buys you a 304 stainless interior — more durable under intensive daily use and easier to sanitize to a high standard. If you plan to use the tub once or twice a day, every day, for years, the stainless interior is worth it. If you’re starting out, using 3–4 times per week, or prioritizing color options, the Plastic is a legitimate choice at a legitimate price. Unsure? Call (888) 500-5675 and we’ll help you decide.

Full Specifications

Exterior Dimensions 50” L × 30” W × 31.5” H
Interior Dimensions ~43.5” L × 26” 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 ~140 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 No — sold separately
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

1 × Cuboid Cold Plunge Tub

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)

1 × 4” Insulated Cover

Custom-fit insulated cover with child safety latches — sized for the Cuboid 50” exterior

1 × Pacific Cedar Step Stool

High-quality Pacific Cedar step stool for safe ergonomic entry and exit

Chiller not included. Add a DCT 0.8HP WiFi Chiller or DCT 1.0HP WiFi Chiller for automated temperature control.


Shipping & Delivery

Free Curbside Freight 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.

White Glove Delivery (Add-On)

Threshold delivery, inside placement, or room-of-choice setup is available as a paid White Glove upgrade. To discuss options, call (888) 500-5675 before ordering.

Placement Planning

Filled weight is approximately 1,350 lbs (~140 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.

Assembly Note

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 is $500 less at $4,999 and comes in Green or Grey. The Cuboid Standard SS at $5,499 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. Both are sold separately — add one at checkout or call (888) 500-5675 for a recommendation.

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.

Is Shop Pay financing available for the Cuboid Plastic?

Yes. Shop Pay installments, powered by Affirm, are available at checkout — allowing you to split the $4,999 purchase into manageable payments. Terms and approval are determined at checkout. HSA and FSA funds may also be applicable to wellness equipment — check with your plan provider before purchase.


Authorized DCT Dealer

Official Dynamic Cold Therapy authorized retailer — full manufacturer warranty backed

Free Freight Delivery

Curbside freight delivery included — White Glove upgrade available

Expert Support

Real people, real answers — (888) 500-5675

Shop Pay Financing

Powered by Affirm — split payments at checkout

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 at $4,999.

Green & Grey Options
Cover & Step Included
Chiller-Ready Ports
Free Freight Delivery
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