Leil, Celto Outdoor Sauna - M

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Regular price: $5,990.00
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Sale price: $5,990.00

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Experience authentic Estonian sauna craftsmanship in a compact 3-person design, featuring stunning bronze-tinted glass, durable CLT wood construction, and a DIY kit designed for assembly in approximately 4–6 hours.

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At Superior Saunas we hand pick the best products, we hold pride for our amazing customer service, one of the largest distributers in the USA for all things Sauna and include education materials in our site along with additional information for every product we sell. Please read below for more information on our guarantees and FAQs.

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Description

The Celto M brings the clean architectural character of Leil’s Celto collection into a more spacious 3-person format. Designed for outdoor sauna living, it pairs generous bronze-tinted glazing with a wider interior that gives you more room to stretch out, relax, and enjoy the sauna together.

Built from substantial 60 mm CLT panels, the Celto M features a two-level aspen bench, wide backrest, integrated ventilation, and a durable EPDM-covered roof. Its pre-manufactured construction keeps installation remarkably straightforward, with the sauna delivered as a DIY kit that can be fully assembled in approximately 4–6 hours.

For couples who want extra space or households looking to share the sauna experience with family and friends, the Celto M offers a more generous take on Celto’s simple, modern outdoor design.

Designed for 3 people — a wider Celto interior with more room to relax and sauna together
60 mm CLT construction throughout the walls, ceiling, and floor for a substantial, streamlined structure
Tempered bronze glass creates an open, light-filled interior with a warm architectural finish
Two-level aspen bench with a wide single-board backrest for comfortable sauna bathing
Four ventilation openings support airflow throughout the sauna
Weather-ready roof constructed from 60 mm CLT panels with a self-adhesive EPDM roof covering
Quick assembly — designed to be fully assembled in approximately 4–6 hours
DIY-friendly delivery with detailed assembly instructions included
LED-ready — optional LED strip lighting can be installed beneath the backrest

Before You Buy

The Celto M is delivered as a DIY sauna kit and requires on-site assembly. Some components are heavy and may require two or more people for safe lifting and installation. For applicable warranty coverage, the sauna must be assembled according to the manufacturer’s instructions.

The exterior wood should be treated with a high-quality weatherproof finish to help protect it from moisture, sunlight, and changing outdoor temperatures. Inspect the wood and protective coating regularly and reapply the finish as needed.

Please note that LED lighting is an optional extra and is not included with the standard Celto M package.

Disclaimer: Superior Saunas is not responsible for electrical installation work. All electrical work must be completed by a licensed electrician.

Included

60 mm CLT wall panels, 60 mm CLT ceiling panels, 60 mm CLT floor panels, self-adhesive EPDM roof cover, tempered bronze glass panels, tempered bronze glass door with premium handle and black hinges, two-level aspen bench, wide single-board backrest, four ventilation openings, impregnated brown base frame, glass mounting components, ventilation components, assembly hardware, fasteners, and detailed assembly instructions.

Dimensions

Overall Height: 84 in.

The Celto M features a wider layout than the Celto S, providing additional interior room for up to three people. Refer to the official Celto M Imperial Measurement drawing for exact layout, front-view, bench, door, and glazing dimensions.

Note: Use the official manufacturer drawing when planning your foundation, installation area, and surrounding clearances.

Assembly & Delivery

The Celto M is designed for efficient installation and can be fully assembled in approximately 4–6 hours. Celto models are supplied as DIY kits with detailed assembly instructions.

Because some CLT panels, glass components, and other sauna parts are heavy, two or more people are recommended for safe lifting and installation.

The Celto collection is designed around a compact shipping package measuring approximately 0.75 × 2.00 × 1.00 m and weighing approximately 500 kg. Confirm final shipment specifications for your individual order before planning delivery access or site handling.

Optional Add-Ons

LED strip lighting beneath the backrest
Sauna heater package

Care & Maintenance

Preserve the Natural Wood: Apply a high-quality weatherproof finish to the exterior wood surfaces to help protect them from moisture, sunlight, and changing outdoor conditions.

Maintain Its Natural Beauty: Inspect the exterior wood and protective coating at least once a year and reapply the finish when necessary.

Let the Sauna Breathe: Allow the sauna to ventilate thoroughly after each session to help release excess moisture and keep the interior fresh.

Keep It Fresh, Naturally: Clean interior surfaces with mild, non-abrasive cleaners. Avoid harsh chemicals to help preserve the natural wood.

Manual, Schematics, & Downloads

Celto Collection Brochure

Celto M Assembly Manual

Celto M Imperial Dimensions & Layout

Choose your model for you

FIND YOUR SAUNA

Leil Celto S

Compact option

Seats: 2 people
Exterior: Approx. 65" W × 56" D × 84" H

Leil Celto M

More room

Seats: 3 people
Exterior: Approx. 80" W × 55" D × 83" H

Both Models include

Shared Design

Construction: Solid 60mm CLT
Benches: 2 Level Aspen
Glass: Tempered Bronze w/ Premium Glass Door Hardware
Roof: Self-Adhesive EPDM Membrane

Delivery & Assembly

DIY Kit

Ships as: Compact flat-pack kit
Package: Approx. 30" × 79" × 39"
Weight: Approx. 1,100 lbs
Assembly: About 4–6 hours with included manual

AUTHENTIC HEAT

Designed for a true sauna experience.

YOUR OWN RETREAT

A dedicated space to slow down and reset.

BUILT FOR YEARS

Quality materials made for lasting enjoyment.

MADE TO SHARE

Room to enjoy the ritual together.

PLAN YOUR CELTO SAUNA

Explore the details that make installation simple

Prep the site

Start With a Level Foundation

Build the structure

Pre-Manufactured CLT Panels

Finish the details

Glass, Benches & Roof

Add your heater

Complete Your Sauna

DIY Kit Instructions included

4–6 Hours Assembly time

2+ People Recommended

60 mm CLT Construction

Leil, Celto Outdoor Sauna - S - Superior Saunas

Preserve the Wood

Keep It Performing Its Best

Keep it handy

Celto Assembly & Care Manual

Find assembly instructions and guidance for caring for your sauna.

Download PDF

Supports Healthy Circulation
Helps Body & Mind Unwind
Supports Lasting Cardiovascular Wellness
A Restorative Ritual for Modern Life

CALL A SAUNA EXPERT

Supports Healthy Circulation
Helps Body & Mind Unwind
Supports Lasting Cardiovascular Wellness
A Restorative Ritual for Modern Life

CALL A SAUNA EXPERT

Guarantees

Quality Assurance

We use high-quality materials and construction methods in all of our hand-made sauna kits, and offer warranties across our carefully selected brands.
Amazing Customer Service

Our knowledgeable Design Consultants are headquartered along the shores of Lake Superior, ready to help you with your sauna build project pre & post-purchase.
Wide Range of Products

From DIY sauna kits to steam rooms and accessories, we provide a comprehensive range of products to make your sauna dreams a reality.
Educational Resources

We provide extensive information and resources about sauna installation & maintenance. Our team is very helpful and resourceful for both new & experienced sauna-goers.

FAQs

What is the timeline for shipping?

Ground Shipping

We utilize FedEx and USPS for shipping our ground orders. We ship Mon-Fri. We do not ship on weekends or holidays. Once a shipment has been created you will receive the tracking information via email. Typical fulfillment time is 1-2 business days from the date of purchase. Transit times can fluctuate depending on the shipping address, but are usually delivered in 2-4 days.

Expedited Shipping

If you are interested in expedited shipping (overnight or 2-day) please reach out to our helpful sales team. Please call 1-877-872-2806 or email info@superiorsaunas.com. We use FedEx for all expedited orders. Orders must be made before 12pm to ship the same day.

What should I expect with freight orders?

Freight Shipping

Once a freight order is placed (door, heater, lumber, prefab, etc.) it enters our fulfillment queue and is packed in the order it was received. Typical fulfillment times are 2-3 weeks. Once an order is ready to ship you will receive the tracking information from our carrier (Valley Companies). You may need to check your SPAM/Junk folder because these emails can be filtered there. Please allow 1-2 weeks for transit time. The delivering terminal will reach out 24 hrs. in advance of the delivery. You do not need to be present at the time of delivery. The shipment is delivered curbside or to the first dry location. If you have any questions, please feel free to reach out. *Note we cannot guarantee delivery timelines and work off estimates with the shipping company directly.

What is the return window?

Return may be made if it was sent by Ground Shipping and must be made within 30 days of receiving your goods.

If it is shipped by Freight, your return is dealt with on a case-by-case-basis.

We will not accept returns for any custom products.

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