Cedar 4x4 Vertical Grain Post

Name: Cedar 4x4 Vertical Grain Post
Brand: Prosaunas
SKU: WOOD613-1
Price: 34.57 USD
Availability: InStock

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The Traditional North American Sauna Choice

Prosaunas Western Red Cedar 4x4 S4SEE is a time-honored favorite for sauna bench legs, bench supports, and support beams. Western Red Cedar's ability to resist warping, withstand wet conditions, and remain comfortable in high heat has made it the go-to sauna material across North America for generations.

Premium Quality, Carefully Selected

Prosaunas sources only the finest Western Red Cedar, hand-selected for smooth, even, straight vertical grain and a consistent light, reddish-brown color. Every piece naturally resists decay and insects, and contains organic compounds that help repel water and prevent insect damage — qualities that translate directly to long-lasting performance in your sauna.

Refined Profile for Superior Comfort

The S4SEE profile — four smooth sides with softened eased edges — delivers a refined, splinter-free finish that feels great to the touch. Backed by Prosaunas' more than 55 years of experience crafting premium sauna rooms, each piece is held to stringent quality standards so your order arrives ready to impress.

PRODUCT SHEET

Cedar 4x4 Vertical Grain Post

Length Per Piece: 1' 1' 3' 4' 5' 6'

Product variants

$34.57 USD

Freight added at checkout

Installation Required

These posts are structural lumber intended to be cut, fitted, and fastened as part of a sauna framing or bench build. Standard carpentry tools and fasteners are required for installation.

Description

Features

What's Included?

Size & Weight

Electrical Specs

Shipping & Delivery

Warranty

Documents

Description

These Western Red Cedar 4×4 posts are milled to a vertical grain, clear Grade A+ specification and surfaced smooth on all four sides with eased edges — the S4SEE profile. Vertical grain orientation means the growth rings run perpendicular to the face of the board, which produces more uniform expansion and contraction across the piece and a tighter, more consistent surface texture than flat-sawn lumber.

Clear Grade A+ stock is selected to be free of knots and defects, which matters structurally and aesthetically wherever a post will be visible or load-bearing inside a sauna build. Western Red Cedar's natural oils also give it inherent resistance to the moisture and heat cycles a sauna interior sees repeatedly over its life.

Key Features

Western Red Cedar, vertical grain — growth rings oriented perpendicular to the face for more stable, predictable movement through heat and humidity cycles
Clear Grade A+ — knot-free and defect-free stock, suitable for both structural and finish-visible applications
S4SEE profile — smooth on all four sides with eased edges, requiring no additional milling or sanding before installation
4×4 nominal dimension — provides the post cross-section needed for framing, benching supports, or structural corners in a sauna build

1'

1-foot length — ideal for blocking, spacers, or short structural connectors

3'

3-foot length — suited to bench legs, low partition framing, or filler posts

4'

4-foot length — a common bench-height and short-wall framing dimension

5'

5-foot length — useful for mid-height interior framing or custom bench structures

6'

6-foot length — covers full bench-height to ceiling framing in standard sauna builds

Size & Weight

Product Width

3.5"

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

Western Red Cedar, vertical grain — growth rings oriented perpendicular to the face for more stable, predictable movement through heat and humidity cycles
Clear Grade A+ — knot-free and defect-free stock, suitable for both structural and finish-visible applications
S4SEE profile — smooth on all four sides with eased edges, requiring no additional milling or sanding before installation
4×4 nominal dimension — provides the post cross-section needed for framing, benching supports, or structural corners in a sauna build

1'

1-foot length — ideal for blocking, spacers, or short structural connectors

3'

3-foot length — suited to bench legs, low partition framing, or filler posts

4'

4-foot length — a common bench-height and short-wall framing dimension

5'

5-foot length — useful for mid-height interior framing or custom bench structures

6'

6-foot length — covers full bench-height to ceiling framing in standard sauna builds

What's Included?

Size & Weight

Product Width

3.5"

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

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Cedar 4x4 Vertical Grain Post

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Cedar 4x4 Vertical Grain Post

From $34.57 USD

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Cedar 4x4 Vertical Grain Post

From $34.57 USD

Quick view

Cedar 4x4 Vertical Grain Post

From $34.57 USD

Quick view

Cedar 4x4 Vertical Grain Post

From $34.57 USD

Quick view

Cedar 4x4 Vertical Grain Post

From $34.57 USD

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Design

DIMENSIONS

Model: Cedar 4x4 Vertical Grain Post
Nominal size: 4x4
Length per piece: 1', 3', 4', 5', 6'
Weight: 10 lb (4.54 kg)

MATERIALS

Species: Cedar
Finish: Natural/Unoiled
Thickness: 3.5"

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.

DELIVERY & INSTALL

Delivery

Assembly

Install

Delivery

Assembly

Install

Let customers speak for us

from 59 reviews

Great Barrel Cold Plunge

Everything as advertised. Easy set-up and a great addition to our sauna. I had a few questions and received prompt replies and great customer service. I would order again.

Tom - Northern Wisconsin

08/17/2026

FD-3 Full Spectrum Infrared Sauna

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!

Grant Paquin

07/10/2026

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Sauna stove and glass door

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

Harvia Cilindro Half Series 6kW Sauna Heater

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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Great Customer Service

Honest, knowledgeable and reliable. I appreciate all the care that goes into each personal interaction.

Krystle HUMPHREYS

07/09/2025

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Awesome!

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The price was by far the lowest I was able to find. I am super impressed with this company.

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DETOXIFICATION

detoxification

Sweat is the safest and most natural way to expel the body's toxins. Practiced for thousands of years, sauna is still one of the most efficient ways to sweat on earth today.

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MUSCLE RECOVERY

Extensive research has shown that exposure to cold and heat can effectively reduce inflammation, accelerating the recovery process and providing relief from pain.

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MENTAL HEALTH

Through breathing techniques you can learn to calm your nervous system in intense heat and cold. Breathing is the key to a racing heart and a racing mind.

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IMPROVED SLEEP

Whoop™ posted a study that showed a 2.5x increase in sleep consistency on days when people practice cold exposure. Learn how heat & cold to create better habits and deeper sleep.

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HEART HEALTH