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Finnmark Sauna Cushion FD-4 | Marine Grade Vinyl

$269
+ Free Shipping Free Delivery within the Contiguous US

In stock

Estimated delivery

7–12 days after you order

Usually ships by UPS or FedEx; a signature is generally not required.

  • Covered by the manufacturer's warranty

    Products are sourced through authorized channels and include the applicable manufacturer warranty, subject to the manufacturer's terms. Terms vary by brand and model, and we'll send you the exact warranty document on request.

    If something goes wrong, contact us first: we help troubleshoot and coordinate the claim with the manufacturer.

  • Full-Value Freight Protection

    Large orders ship fully insured. If freight arrives damaged, Topture helps coordinate the claim and replacement process with the carrier and manufacturer.

    At delivery, note any damage on the delivery receipt and take photos before the driver leaves, then report it to us within 24 hours.

  • We're here after your purchase, too.

    Need help with delivery, installation documentation, heater questions or a warranty issue? Our team can help you find answers and coordinate with the manufacturer when needed.

Description

The Finnmark FD-4 Sauna Cushion is a marine-grade vinyl bench cushion made for the Finnmark FD-4 Trinity infrared sauna. It measures 44" L × 17" D × 2.5" thick, with a 2.5" foam insert inside a vinyl cover that has a full zipper, so the cover comes off for cleaning.

  • Cover: marine-grade vinyl, which Finnmark describes as non-toxic and fade- and tear-resistant.
  • Insert: 2.5" foam, which Finnmark describes as non-toxic.
  • Zipper: a full zipper around the cover.
  • Color: black.

The cushion can be added when ordering the FD-4 Trinity on its product page, or ordered on its own.

Specifications
Finnmark FD-4 Sauna Cushion specifications
Model FM-REC-SEAT-COMBO-4
Fits Finnmark FD-4 Trinity infrared sauna
Dimensions 44" L × 17" D × 2.5" thick
Foam insert 2.5" foam
Cover Marine-grade vinyl with a full zipper
Color Black
Weight 6 lb
Warranty 1 year (Finnmark warranty sheet)
Why Finnmark?

Why Finnmark?

Finnmark Designs builds infrared saunas with Spectrum Plus™ heaters, in a cedar interior with a Thermo-Aspen exterior. The FD-1, FD-2 and FD-3 are full-spectrum models; the Trinity FD-4 and FD-5 add a Harvia traditional heater and a red light panel.

  • Up to 170°F on infrared. Finnmark's manuals give 170°F as the maximum infrared setting for every model, reached in about 55–60 minutes.
  • Spectrum Plus™ heaters. Incoloy-sheathed Spectrum Plus™ elements heat every model. The FD-1, FD-2 and FD-3 add Spectrum Carbon panels and Spectrum LED ceiling lights with a red setting.
  • Low EMF/ELF heaters. Finnmark labels its Spectrum Plus™ heaters Low EMF/ELF.
  • Cedar inside, Thermo-Aspen outside. Clear A-grade Canadian Western Red Cedar lines the interior. The exterior is Thermo-Aspen, which Finnmark treats with heat and steam rather than chemicals and sells as Thermal Plus™.
  • Warranty. Finnmark's warranty sheet covers the cabin and its controls and power supply for 10 years in indoor residential use (5 years outdoors), the Spectrum Plus™ heaters for life, and the carbon heaters and LED lighting for 10 years.
  • ETL listed. The FD-1, FD-2, FD-3 and FD-4 are ETL listed by Intertek to UL 875.

The Finnmark range

Finnmark infrared saunas: seating, exterior size and power
Model Seats Exterior (W × D × H) Power
FD-1 1 37" × 37.8" × 78.3" 120 V on a dedicated 15 A outlet
FD-2 2 48" × 43.5" × 78.3" 120 V on a dedicated 15 A outlet
FD-3 3–4 70.9" × 45.3" × 78.3" 240 V on a dedicated 15 A circuit, NEMA 6-15
FD-4 Trinity 2 48.8" × 48.8" × 83.1" Infrared on 120 V / 15 A, plus a Harvia heater on its own circuit, wired by an electrician
FD-5 Trinity XL 3–4 74.8" × 63.8" × 83.1" Infrared on 240 V / 15 A, plus a hard-wired Harvia heater, wired by an electrician
Warranty

REAL HOMES. REAL REVIEWS.

What Topture Customers Say

Topture is rated 4.9/5 across 463 customer reviews

We thought about buying a sauna for years and finally did. We absolutely love it, especially in the winter. It’s incredibly easy to assemble with two people the whole family uses it.

Verified buyer

Ordered this sauna fall 2024 and we love it. No better feeling during a Minnesota winter. Lastly, I have to mention the customer service for this purchase has been like no other. Any questions or requests I had were addressed immediately by Topture. I got more than I expected from them and have already recommended them to several people looking for saunas. SO if you're thinking about it, JUST DO IT already..

Verified buyer

Thanks for the great service - greatly appreciated.

Verified buyer
463 Customer Reviews

Product and store reviews from Topture customers, collected by Judge.me.

Lifetime Expert Support

Same team before and after the sale, from sizing to warranty support.

Authorized Finnmark Retailer

Sold by Topture, with the applicable manufacturer warranty.

Full-Value Freight Protection

Freight damage? We help coordinate the claim and replacement process.

STILL UNSURE?

Frequently Asked Questions

Which sauna does the Finnmark FD-4 cushion fit?
It is made for the Finnmark FD-4 Trinity, which has two benches: an upper bench 44.5" wide and 18.9" deep, and a lower bench 44.5" wide and 15.7" deep. The cushion measures 44 by 17 inches and is 2.5 inches thick.
What is the Finnmark FD-4 cushion made of?
A 2.5-inch foam insert inside a marine-grade vinyl cover with a full zipper. Finnmark describes both the vinyl and the foam as non-toxic, and the vinyl as fade- and tear-resistant.
What warranty does the Finnmark FD-4 cushion have?
Finnmark's warranty sheet, last updated December 12, 2022, lists the optional cushion at 1 year.

General Topture Questions

Where are you located, and where do you ship from?

Topture is an online retailer serving customers in the contiguous United States. The company is Topture LLC, a Wyoming limited liability company, and its registered business address is 30 N Gould St, Ste N, Sheridan, WY 82801.

Orders ship from manufacturer and distributor warehouses in the U.S. and Canada, and some products ship directly from the manufacturer in Europe. Each product page shows its estimated delivery time.

How much is shipping?

Orders over $200 ship free within the contiguous United States. Orders under $200 carry a small shipping fee.

Two exceptions: SaunaLife and ThermaSol products carry a freight charge at any order value, and sauna stones ordered without a heater ship at $60 per box because of their weight.

Every charge is shown at checkout before you pay.

Do you provide financing?

Absolutely! To view your financing offer, simply select Shop Pay Installments as your payment method at Step 3 of checkout.

You'll need to enter a debit card to receive your offer, but don’t worry—you can still back out before completing the purchase.

How long will it take for my items to arrive?

If your order is in stock, most orders ship within 2–7 business days of purchase. Transit time then depends on the distance from the warehouse and, for freight, on booking a delivery appointment.

For custom, pre-order or made-to-order items, the estimated delivery time frame is listed on the product page. Delivery dates are estimates, so please don't book installation labor until your order has arrived and been inspected.

What happens after I place my order?

As soon as you place your order, you'll receive a confirmation email with your order details—be sure to keep it for your records. Once your order ships, you'll receive another email with tracking information.

For freight deliveries, the carrier will call or text you to schedule an appointment once the shipment reaches their local terminal. Someone needs to be there to inspect the shipment and sign for it. Smaller parcels arrive by UPS or FedEx without an appointment.

Is there a warranty?

Yes. Products purchased through Topture include the applicable manufacturer’s warranty, subject to the manufacturer’s terms. You’ll find the warranty details for each product under the "Warranty" tab on its product page, and we help with troubleshooting and warranty coordination if an issue comes up.

Do you have a showroom?

We don’t have a showroom — we sell online. Our team is available by phone, email and chat to help you compare models, sizes and heaters, and we can send dimensions, installation manuals and electrical requirements before you buy.

Where do you deliver to?

We deliver throughout the 48 contiguous states, with curbside freight delivery for large items. Free shipping and standard rates apply there only. Alaska, Hawaii, Puerto Rico, other U.S. islands and Canada are quoted separately, depending on the brand and model. We can't ship freight or oversized items to P.O. boxes.

Do you ship internationally?

International Shipping

For many products, yes, including to Canada, by custom quote. Email contact@topture.com with the product and your address before you order; availability and cost depend on the brand and model. Any duties, taxes and customs fees are your responsibility.

Shipping to Hawaii, Alaska, and Puerto Rico

Free shipping applies to the contiguous United States only. Shipping to Alaska, Hawaii, Puerto Rico and other U.S. islands is quoted separately and depends on the brand and model. Email contact@topture.com for a quote before you order.

Your sauna cushion, done the right way.

  • Covered by the manufacturer's warranty

    Products are sourced through authorized channels and include the applicable manufacturer warranty, subject to the manufacturer's terms. Terms vary by brand and model, and we'll send you the exact warranty document on request.

    If something goes wrong, contact us first: we help troubleshoot and coordinate the claim with the manufacturer.

  • Full-Value Freight Protection

    Large orders ship fully insured. If freight arrives damaged, Topture helps coordinate the claim and replacement process with the carrier and manufacturer.

    At delivery, note any damage on the delivery receipt and take photos before the driver leaves, then report it to us within 24 hours.

  • We're here after your purchase, too.

    Need help with delivery, installation documentation, heater questions or a warranty issue? Our team can help you find answers and coordinate with the manufacturer when needed.