Name: Spruce 1x4 Nickel-Gap Tongue & Groove Paneling
Brand: Prosaunas
SKU: WOOD716-1
Price: 1.57 USD
Availability: InStock

Description

Features

What's Included?

Size & Weight

Electrical Specs

Shipping & Delivery

Warranty

Documents

Description

This spruce tongue-and-groove paneling is milled to a 1x4 nominal profile (15mm x 90mm actual) with a nickel-gap reveal, giving finished sauna walls and ceilings a clean, evenly spaced shadow line between each board. The interlocking tongue-and-groove edges keep every plank aligned during installation and lock out the minor seasonal movement that heat and humidity cycles produce inside a sauna.

Available in fourteen lengths from 1 foot through 14 feet, the range lets you order boards sized to your actual wall and ceiling runs, minimizing waste and avoiding unnecessary seams. Spruce is a traditional sauna species — it stays relatively cool to the touch at bench height and accepts the heat and moisture of regular sauna use without significant warping when properly ventilated.

Key Features

Nominal 1x4 profile, 15mm × 90mm actual — a proven sauna paneling dimension that balances coverage per board with manageable weight during installation.
Nickel-gap profile creates a uniform reveal between boards, producing a shadow line that adds visual depth without requiring additional trim work.
Tongue-and-groove milling self-aligns each course and allows concealed fastening through the tongue, keeping face surfaces clean and uninterrupted.
Spruce species tolerates repeated heat and humidity cycles, making it appropriate for sauna wall and ceiling applications.
Fourteen length options (1 ft – 14 ft) let you match board length to your wall height or ceiling span, reducing cut waste and seams.

Size & Weight

Dimensions

15 × 90 mm

Product Width

3.54" (90mm)

Shipping Length

Up to 10'

SHIPPING & DELIVERY

Sauna wood is not free shipping. Length, piece count, profile, and weight set the rate. These are the Bathing Brands contiguous-US flat rates. Canada is the same table plus $100. Alaska, Hawaii, and remote addresses are quoted.

Checkout charges the 8' piece-count table (contiguous US). Canada is the same table plus $100. Boards over 8' use that same checkout rate; dock or liftgate extras are a follow-up. Alaska, Hawaii, and remote addresses are quoted.

BOARDS UP TO 8'

Under 40 pieces generally ships FedEx Ground in cardboard. Over 40 pieces generally ships LTL with a liftgate on a wood pallet. The longest board in the order sets the rate tier.

Under 19 boards — $195
20–39 boards — $395
40–99 boards — $495
100–299 boards — $695
300–499 boards — $895
500–799 boards — $995
800–999 boards — $1,295

BOARDS OVER 8' UP TO 10'

These lengths ship LTL on a wood pallet. They do not qualify for a liftgate — you need a dock, machinery, or hand offload on site. Carriers allow about one hour to unload before extra fees.

Under 19 boards — $295
20–39 boards — $495
40–99 boards — $595
100–299 boards — $795
300–499 boards — $995
500–799 boards — $1,095
800–999 boards — $1,395

HOW THIS SHIPS

We pack for a safe arrival at the lowest rate that fits the order.
Boards over 8' carry a surcharge because long crates cost more to move than a standard skid.
Heaters, doors, or accessories on the same order can offset some of that freight.

Description

Features

Key Features

Nominal 1x4 profile, 15mm × 90mm actual — a proven sauna paneling dimension that balances coverage per board with manageable weight during installation.
Nickel-gap profile creates a uniform reveal between boards, producing a shadow line that adds visual depth without requiring additional trim work.
Tongue-and-groove milling self-aligns each course and allows concealed fastening through the tongue, keeping face surfaces clean and uninterrupted.
Spruce species tolerates repeated heat and humidity cycles, making it appropriate for sauna wall and ceiling applications.
Fourteen length options (1 ft – 14 ft) let you match board length to your wall height or ceiling span, reducing cut waste and seams.

What's Included?

Size & Weight

Dimensions

15 × 90 mm

Product Width

3.54" (90mm)

Shipping Length

Up to 10'

Electrical Specs

Shipping & Delivery

SHIPPING & DELIVERY

BOARDS UP TO 8'

Under 40 pieces generally ships FedEx Ground in cardboard. Over 40 pieces generally ships LTL with a liftgate on a wood pallet. The longest board in the order sets the rate tier.

Under 19 boards — $195
20–39 boards — $395
40–99 boards — $495
100–299 boards — $695
300–499 boards — $895
500–799 boards — $995
800–999 boards — $1,295

BOARDS OVER 8' UP TO 10'

These lengths ship LTL on a wood pallet. They do not qualify for a liftgate — you need a dock, machinery, or hand offload on site. Carriers allow about one hour to unload before extra fees.

Under 19 boards — $295
20–39 boards — $495
40–99 boards — $595
100–299 boards — $795
300–499 boards — $995
500–799 boards — $1,095
800–999 boards — $1,395

HOW THIS SHIPS

We pack for a safe arrival at the lowest rate that fits the order.
Boards over 8' carry a surcharge because long crates cost more to move than a standard skid.
Heaters, doors, or accessories on the same order can offset some of that freight.

Warranty

Documents

Brand Spotlight

Prosaunas

Built by Sauna Artisans

From Western Red Cedar to Himalayan salt, every material is chosen by our team of sauna artisans — because "Perfection in Sauna" is the standard we build to, not just a tagline.

Prosaunas

Everything Your Sauna Needs, One Source

Wood, doors, windows, lighting, salt, care products — Prosaunas outfits every detail of your build, backed by a nationwide dealer network.

Prosaunas

Real Experts, Real Answers

Questions about materials or installation? Our Wheeling, Illinois-based team is here Monday–Friday, and every build is backed by our workmanship warranty.

Let customers speak for us

from 59 reviews

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Tom - Northern Wisconsin

08/17/2026

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Edward Plummer

08/12/2026

Absolutely stellar interaction with Mitch

Absolutely stellar interaction with Mitch. Cannot thank them enough. Would do business again without a thought in the matter!

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Mitch and the team were incredibly thoughtful and patient while I worked on my order. Shipping was clear and conciencias and everything arrived as it should

Grant Paquin

07/02/2026

Awesome folks!

Communication and attention to customer service was amazing!!!

Kiley Hill

05/01/2026

Fantastic

Love our large sauna! Actually put it together by myself.....was not recommended but can be done! Exactly as advertised! Great service!

John Riekhof

03/02/2026

Great Cold Plunge Tub

This is a great cedar-sided cold plunge tub. I spent a considerable amount of time researching cold plunge tubs and wanted one with real ceder wood to fit my sauna room. It also has a durable heat pump, compared to lower-quality chillers. I have had it a few months and no issues. Also, in the pics below, I have the chiller, which is about a 2' x 2' cube plumbed to a different space for a clean sauna room look. I would highly recommend this tub and the price is less than some on the market.

Tom L

01/20/2026

These guys are AMAZING!

These guys are AMAZING! I’d leave 10 stars if I could. We purchased a barrel sauna and cold plunge from them in fall 2025. They were absolutely terrific to work with! Our contractor and electrician had many (many) questions, all were promptly and kindly answered. They even customized our order by selling an extra long cord so we could install control panel inside for extra protection in MN winters. Shipping and delivery was a breeze. We are using our sauna daily and love it! Zero hesitation recommending this company! Thank you Johnny and Mitch for all your help!!!

Caley Philipps

12/12/2025

Caley Philipps

12/09/2025

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What a wonderful sauna!

Researched many saunas for many months. Finally landed on this one. Only complaints i have are the instructions weren't very well written and the trim on the outside was very difficult to put together. We use it almost daily.

Ashley Slocum

11/24/2025

Great service, great sauna

Super stoked about the new sauna. I ended up with a beautiful 2-3 person cedar sauna with a huum heater. It’s perfect. These guys were helpful in choosing the right size, type, etc.
very glad I used the cold plunge guys.

Dr. Stephen Sherman

10/25/2025

Great service!

Received order quickly. Great service

Chad Anderson

10/10/2025

Cold Plunge Gurus

Had a great experience working with the Cold Plunge Guys and would highly recommend their products!

Jonathan Zook

10/10/2025

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07/03/2025