SunRay Cayman 4-Person Outdoor Traditional Sauna | Hemlock
SunRay Cayman 4-Person Outdoor Traditional Sauna | Hemlock
- Regular price
- $5,690.00
- Regular price
- $8,535.00
- Sale price
- $5,690.00
- 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 →- Two bench tiers in a 68 in wide room
- A three-panel glass front, door centered
- Stones and assembly sealant in the crate
Curbside delivery, insured in transit
Couldn't load pickup availability
4.7 from 2,600+ owner reviews
Watch owner videos
Talk to a Recovery Specialist
1-888-500-5675
How does delivery work?
How does delivery work?
Free shipping to the contiguous 48. On every SunRay sauna, by freight from Richmond, Virginia. The estimate on each product page is in business days.
Freight to the curb. A kit of panels or barrel staves, in cartons on a pallet. The freight company calls to book a window, someone signs, and residential deliveries come on a lift gate truck. Plan for two or more people.
Hard to reach addresses. If a truck cannot reach you, a smaller vehicle may cost extra, and we tell you before the delivery is booked.
When it ships. In-stock saunas usually leave SunRay's warehouse within 1 to 2 business days of SunRay receiving the order, and you get a tracking email when it leaves.
If it arrives damaged. Note it on the delivery receipt before signing and photograph it. Refuse a punctured or crushed pallet and call us while the driver is there; for minor damage, call before the driver leaves. Report anything found after unpacking within 48 hours.
Where we ship. The contiguous 48 states. We do not ship SunRay to Alaska, Hawaii or Puerto Rico.
Not included: the electrical work and the assembly. A licensed electrician hardwires the Harvia heater on a traditional sauna to 240 V. Professional setup and assembly is available on the indoor saunas, and by quote on the others.
What does the warranty cover?
What does the warranty cover?
Structure: 10 years. The wooden panels, floor, ceiling and glass, from the original date of purchase, for the parts needed to repair a defect. If a structural defect cannot be fixed with a part, SunRay may send a replacement sauna; assembling it is then your cost.
Parts and electronics: 1 year. Every other part, including the heater and the electrical components. Parts replacement only: labor for fitting a part is not covered.
Not covered. Alteration, neglect, misuse, freight damage caused by the carrier, accidents and acts of God. Surface cracks and minor blemishes in the wood are natural, not defects. Report delivery damage within 48 hours, before assembly.
Two conditions decide most claims. Residential use only, because a commercial setting voids the warranty. And installed, run and maintained to the instructions: indoor saunas stay indoors, and an outdoor sauna without a weather cover needs its exterior resealed every year.
Who is covered. The original customer at the original delivery address. The warranty cannot be transferred.
Ask before a repair. Get SunRay's written consent before any repair you expect to be reimbursed. SunRay decides the cause of a fault and whether to repair or replace.
Who handles it. We are a factory-authorized SunRay dealer and file the claim for you. Call us with your order number, the model and photographs.
What if I need to return it?
What if I need to return it?
Request it within 20 days of shipping. New, unassembled and resalable; the ship date is in your tracking email. We handle the return, so you do not contact SunRay.
Unassembled means returnable. In its original packaging and crate with the manuals and accessories. A sauna that has been assembled, wired in or heated cannot go back.
What a return costs. A restocking fee of 20% of the purchase price may apply on a change-of-mind return. There is none on a documented freight damage claim.
Who pays the return freight. You do on a change of mind. We cover it when the cause is shipping damage or our error.
Original shipping. We never deduct the original shipping from your refund.
Damaged on arrival. A different and faster process. Note it before signing and photograph it. Refuse a punctured or crushed pallet and call us while the driver is there. Report anything found after unpacking within 48 hours.
Cancelling before it ships. No fee before we place the order with SunRay. After that an administrative fee of up to 5% may apply, and we waive it whenever we are not charged. If we miss our own ship date, you cancel with no fee.
To start a return. Call us for a Return Authorization number before anything ships back. Refunds go to the original payment method within 7 business days of the return being received and inspected.
PRODUCT DESCRIPTION
Jump to 14 sections
The short answer
The SunRay Cayman is a 4 person outdoor traditional sauna with two bench tiers and a glass front
The Cayman, SunRay model 400D7, seats four on an upper and a lower bench behind a black-framed glass front. A 6 kW Harvia electric heater with stones heats a hemlock room 68 inches wide, and a metal roof caps a cabin that stands under 85 inches tall.
Two tiers are the point of this model. The upper bench sits higher in the hot air, the lower one is cooler, and each person chooses their level. It is the pick for four people who want that choice in a low, modern cabin.
Choose your heat
Two bench tiers
Upper and lower benches, so each of four people picks hotter or milder.
Open front
Glass across the face
A three-panel black-framed glass front with the door in the middle.
Wet or dry
Harvia with stones
6 kW of Harvia heat; a ladle of water on the stones for steam.
Size and seating
SunRay Cayman dimensions for a 4 person backyard sauna
The cabin and the roof have different footprints. Plan the site to the roof.
| With the metal roof | 85.4 W x 69.3 D in |
|---|---|
| Cabin | 71.7 W x 61.4 D in |
| Height | 84.7 in |
| Interior | 68 W x 58 D x 75 H in |
|---|---|
| Benches | Upper and lower, with backrest |
| Seats | 4 adults |
Cabin and roof
The cabin is 71.7 by 61.4 inches and the metal roof 85.4 by 69.3, both 84.7 inches tall. On a tight site, the roof's 85.4 inch width is the number to check against walls and fences.
How four people sit
The upper and lower benches drop onto supports already fixed to the walls, and a backrest mounts on the back wall. In a 68 by 58 inch room, that gives four adults room across two levels, with the heater in its wooden frame alongside.
The heater
The SunRay Cayman heater: 6 kW Harvia with stones, and the warm-up to expect
A 6 kW Harvia electric heater with stones, set in a wooden frame, heats the Cayman.
Run it dry, or ladle water over the stones and the room fills with steam; the bucket and ladle come with it. For the setting, SunRay's outdoor traditional manuals recommend 125 to 170 F, and 170 F is SunRay's stated maximum. Expect 45 to 60 minutes of warm-up from cold, the figure in those manuals, and the upper end when the weather is cold. The use page of the Cayman's own D7 manual prints 120 to 140 F and 8 to 15 minutes, figures written for SunRay's infrared cabins; for a 6 kW stone heater, go by the traditional figures above and the Harvia heater manual.
Once the room holds the set temperature, the heater cycles on and off. Sessions, SunRay advises, should not run past 30 minutes. The Harvia manual for the heater is in the shipment.
Construction
Inside the build of the SunRay Cayman outdoor sauna
Hemlock in double-panel walls, a glass front, and a two-piece metal roof.
| Wood | Hemlock |
|---|---|
| Walls | Double-panel |
| Front | Three-panel black-framed glass, door in the center |
| Roof | Metal composite, two sections, over an interior ceiling |
| Light | Sealed dome light |
| Outer finish | Sealed; SunRay asks for a reseal every year |
The roof
The D7 manual builds the top in two layers. An interior ceiling lifts over the walls and rests on supports already on them. Above that, a roof frame goes on in two sections screwed together in the middle, and two sheets of metal composite roofing slide over it and are screwed down.
Sealing, now and every year
The D7 manual says the cabin is sealed with a weather sealant that breaks down outdoors over time, so it recommends resealing annually or as needed. The SunRay warranty makes the yearly reseal a condition for an outdoor sauna without a weather cover. The manual also asks for a moisture barrier between the floor and any damp surface or pavers.
More backyard cabins are in our outdoor saunas collection.
Before you order
Before the SunRay Cayman ships: base, clearance and a 240 V circuit
Settle the ground and the wiring before the freight is booked.
- A level baseA wooden deck, concrete pad or pavers, as the D7 manual lists
- A moisture barrierRequired by the manual over pavers, damp ground or any surface in ground contact
- Width for the roof85.4 by 69.3 inches, and 84.7 inches of height
- Dedicated 240 V circuitHard-wired to the heater by a licensed electrician
- A caulking gunThe sealant ships with the cabin; have a gun ready to apply it
- Two to four adultsThe D7 manual's assembly crew
- Permit and setbackYour building department, and your HOA if you have one, decides whether a detached backyard sauna needs a permit and how far back from the lot line it sits
Wiring
The Cayman's 6 kW heater needs 240 V, on a dedicated circuit, hard-wired by a licensed electrician. The electrician sizes the circuit from the heater manual and the National Electrical Code. The included Harvia Vega heater is built to European standards and carries the CE mark. If your inspector requires a UL or ETL listed heater, contact us before you order.
Running cost
SunRay Cayman running cost, in dollars
Worked at 6 kW, full power, and 18.34 cents per kilowatt hour, the EIA Electric Power Monthly figure for June 2026.
Per visit
$1.65
An hour warming, 30 minutes inside: 9 kWh.
Per week
$4.95
Three visits.
Per year
$257
156 visits at three a week.
The heater cycles once the cabin is up to temperature, so these full-power figures are a ceiling, worked on the full hour of warm-up the manuals allow. Use your own rate the same way: kilowatts, times hours, times price.
What you get
What the SunRay Cayman outdoor sauna includes
The cabin, its two-tier seating, the heater and stones, the roof and the sealant for assembly.
Required before it runs
- 240 V dedicated circuitA licensed electrician runs it and hard-wires the heater
- Deck, pad or paversLevel, with a moisture barrier where needed
- A caulking gun and helpersFor the included sealant, and two to four adults
Optional
- Professional Setup & AssemblyThird party crews, quoted for your address: professional sauna setup service
- Sealant for future yearsFor the reseal SunRay asks for annually
| Walls and floor | Floor with support, back, side and glass front walls, glass door |
|---|---|
| Ceiling and roof | Interior ceiling, two-section roof frame, metal composite roof sheets |
| Heater | 6 kW Harvia electric heater, stones, wooden frame |
| Seating | Upper bench, lower bench, backrest |
| Fittings | Sealed dome light, door handle |
| Accessories | Thermo-hygrometer, sand timer, bucket and ladle |
| Sealant | Included, per the D7 manual |
Assembly
Assembling the SunRay Cayman 4 person outdoor sauna
The D7 manual asks for two to four adults.
Lay the floor level, with a moisture barrier under it if it will sit on pavers. Run the included sealant along the bottom edge of the back wall, stand it against the floor support, and attach the side walls with their pre-installed buckles. The front wall goes on the same way; taking the glass door off its hinges first makes the front wall easier to attach. Lift the interior ceiling over the walls onto its supports, then fit the upper and lower benches and the backrest.
Assemble the wooden frame and set the heater in it. Mount the dome light in the top corner of the back wall and feed its wire up through the ceiling. Screw the two roof frame sections together and to the side walls, slide on the metal roof sheets and fix them. Finish with the door handle, the hygrometer and sand timer on a side wall, and a bead of sealant down every vertical outside corner and around the door frames. The electrician connects the heater last.
Delivery day
SunRay Cayman delivery: free to the curb, lift gate included
Free freight across the lower 48 to your curb, on a lift gate truck, with a business day estimate in the buy box. SunRay's freight figure is 963 pounds.
Before delivery
The freight company calls to agree a time. Someone must be home to inspect and sign; book the helpers who will carry the panels.
At the truck
Before signing, inspect the pallet, each carton and the large glass front panels. Photograph damage and note it on the receipt.
Before you build
Open the cartons soon and check the glass, the walls and the roof sheets. Our SunRay shipping policy sets out the steps.
Returns. Return requests are open for 20 days from the date it ships, with the cabin unassembled and crated as it came. If you simply change your mind, the return freight is yours and a 20% restocking fee may apply; we do not deduct the original shipping. Details: the SunRay return policy.
Reference
SunRay Cayman 400D7 4 person outdoor traditional sauna specifications
| Exterior | 85.4 W x 69.3 D x 84.7 H in; cabin 71.7 W x 61.4 D in |
|---|---|
| Interior | 68 W x 58 D x 75 H in |
| Seating | 4 adults, upper and lower benches |
| Heater | 6 kW Harvia electric heater with stones |
| Power | 240 V, dedicated circuit, hard-wired by a licensed electrician |
| Temperature | 125 to 170 F, SunRay's outdoor traditional manuals; 45 to 60 minutes to warm up |
| Wood | Hemlock |
| Included | Stones, thermo-hygrometer, sand timer, bucket, ladle, assembly sealant |
| Shipping weight | 963 lb, SunRay's freight figure |
| Warranty | 10 years structural; 1 year heater and electrical parts; residential |
Full specification tables
| Cabin | 71.7 W x 61.4 D in |
|---|---|
| Roof | 85.4 W x 69.3 D in |
| Height | 84.7 in |
| Interior | 68 W x 58 D x 75 H in |
| Seating | Two tiers and a backrest |
| Shipping weight | 963 lb |
| Heater | 6 kW Harvia with stones |
|---|---|
| Circuit | 240 V, dedicated, hard-wired by a licensed electrician, sized from the heater manual and the NEC |
| Temperature | 125 to 170 F, SunRay's outdoor traditional manuals |
| Warm-up | About 45 to 60 minutes |
| Steam | Pour water on the stones |
| Model | 400D7 |
|---|---|
| Wood | Hemlock |
| Walls | Double-panel |
| Front | Black-framed glass, center door |
| Roof | Metal composite, two sections |
| Lighting | Ambient dome light |
| Included | Thermo-hygrometer, sand timer, bucket, ladle, assembly sealant |
| Foundation | Deck, concrete pad or pavers, moisture barrier as needed |
| Assembly | 2 to 4 adults, caulking gun |
| Shipping | Free freight to the curb, lower 48, lift gate truck |
| Warranty | 10 years structural; 1 year heater and electrical parts; residential |
The range
Comparing the SunRay Cayman with the other SunRay outdoor traditional saunas
The Cayman is the one outdoor model here with two bench tiers. Its closest rival in the line is the Denali.
| SunRayCaymanYou are here | SunRayDenali | SunRaySeneca | SunRayWaverly | SunRayFreeport | |
|---|---|---|---|---|---|
| Bench layout | Two tiers | L-shape, one level | Single deep bench | Single rear bench | Single 55 in bench |
| Persons | 4 | 4 | 3 | 3 | 3 |
| kW | 6 kW | 6 kW | 6 kW | 4.5 kW | 4.5 kW |
| Wood | Hemlock | Western red cedar | Western red cedar | Hemlock | Hemlock |
| Cabin W x D | 71.7 x 61.4 in | 72 x 62 in | 61 x 51 in | 61 x 51 in | 61 x 51 in |
| Roof W x D | 85.4 x 69.3 in | 89 x 83 in | 78 x 71 in | 73 x 63 in | 73 x 63 in |
| Tallest point | 84.7 in | 89 in | 89 in | 100 in | 100 in |
| Interior W x D x H | 68 x 58 x 75 in | 68 x 58 x 75 in | 57 x 47 x 75 in | 57 x 47 x 73 in | 57 x 47 x 73 in |
| Front | Glass front | Glass door | Glass door | Glass door, 2 windows | Glass-paned door, 1 window |
| Roof | Metal composite | Metal | Metal | Black pitched metal | Black pitched metal |
| Shipping weight | 963 lb | 900 lb | 750 lb | 839 lb | 819 lb |
Pick the Cayman over the Denali for tiered seating, a glass front and a roof that needs less depth; pick the Denali for cedar and seating on one level. If only three will use it, the Seneca keeps the 6 kW heater in a smaller cedar cabin.
For the two seat Eagle and Bristow, see every SunRay sauna side by side. See every model with a heater and stones in our traditional saunas collection.
Warranty
SunRay Cayman outdoor sauna warranty coverage
SunRay's warranty certificate covers the Cayman on the same terms as every SunRay sauna.
| Structure, 10 years | Wooden panels, flooring, ceiling and glass, including the glass front; parts needed for the repair |
|---|---|
| Heater and electrical, 1 year | Parts replacement only; labor not covered |
| Setting | Residential use only |
| Outdoor condition | Reseal the exterior annually if there is no weather cover |
| Transfer | None; original buyer, original delivery address |
Carrier freight damage, misuse and installation that departs from the instructions are excluded, and small surface cracks in the wood are not defects. Bring claims to us and we take them to SunRay. The SunRay warranty policy page has the summary, and the certificate itself is yours by email before you order.
Buyer questions
SunRay Cayman 4 person outdoor sauna FAQ
What are the SunRay Cayman dimensions?
The cabin is 71.7 by 61.4 inches, the metal roof 85.4 by 69.3 inches, and both stand 84.7 inches tall. Inside, the room is 68 by 58 inches with 75 inches of headroom.
What size is the SunRay Cayman heater?
A 6 kW Harvia electric heater with stones, in a wooden frame. SunRay's heater rating, its product title and the D7 manual's specification table all give 6 kW.
What electrical service does the SunRay Cayman need?
240 V on a dedicated circuit, hard-wired by a licensed electrician, for the 6 kW Harvia heater. The electrician sizes the circuit from the heater manual and the National Electrical Code.
How long does the SunRay Cayman take to heat up?
Plan on 45 to 60 minutes from cold, the figure in SunRay's outdoor traditional manuals, to a recommended 125 to 170 F. Cold weather pushes it toward the hour.
Does the SunRay Cayman come with sealant?
Yes. The D7 manual refers to the included sealant for assembly, applied at the base of the back wall, the outside corners and the door frames. Have a caulking gun ready to apply it.
What should the SunRay Cayman stand on?
A level wooden deck, concrete pad or pavers. Over pavers, damp ground or anything in contact with the ground, SunRay's manual asks for a moisture barrier under the floor.
How is the SunRay Cayman delivered?
Free freight to the curb in the lower 48 on a lift gate truck, with a business day estimate. SunRay's freight figure is 963 pounds. Inspect it, especially the glass, before you sign.
What is the SunRay Cayman warranty?
Ten years on the wooden panels, flooring, ceiling and glass, and one year on the heater and electrical parts, parts only, under SunRay's warranty certificate. Residential use only, with a yearly reseal if the sauna has no weather cover.
One last thing
Order the SunRay Cayman for four
Two tiers of seating, a glass front, a 6 kW Harvia heater with stones and free curbside freight. Add the Cayman to your cart above, or call if you would like to compare it with the Denali first.
ChaddySauna specialistMon to Sat, 9am to 6pm ET
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Ed and Kay HinkleVerified buyerDynamic Venice 2-Person Sauna
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Very pleased with the price and quality of the [sauna]
Ed H.Verified buyerDynamic Venice 2-Person Sauna
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As a personal trainer I use this with my clients daily as well as for my personal use.
Heather H.Power Plate MOVE
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It has a beautiful design, and slim profile. … It gets hot fast, and puts off some great heat.
Caleb W.Harvia The Wall Sauna Heater -
Shipped and arrived faster than expected. The unit itself is great and zero issues! Thank you!
Russell M.Verified buyerHarvia Cilindro PC80
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Robert W.Power Plate MOVE
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I use it every morning for stretching and three times a week with my kettle bell
Tim J.Power Plate pro5 -
Debbie H.Power Plate MOVE
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Been using it in my 6x8 Princeton sauna since 2019. Powerful and kicks up to 170 degrees
PeterHarvia KIP80B 8 kW Sauna Heater -
Ciaran, Float On Hong KongDreampod float pods
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After five months of comparing different models, my wife and I finally decided on the Dios. … We use it every day and are very happy with our choice.
John K.Kahuna DIOS 7300 Massage Chair -
We have the smaller unit of this model and it has been a real work horse, getting at least two daily uses since it was installed in July of last year.
SteveHarvia KIP45B 4.5 kW Sauna Heater
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