Finnish Sauna Builders Custom 4' x 5' x 8' Indoor Sauna Kit

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Finnish Sauna Builders Custom 4' x 5' x 8' Indoor Sauna Kit

$6,323.90

Specifications

Specification	Details
Dimensions	4' x 5' x 8'
Installation Type	Indoor, Built-In
Wood Options	Western Red Cedar, Thermo Poplar, Thermo Aspen/Alder
Wall & Ceiling Boards	1×4 Tongue & Groove
Bench Depth	20 inches
Door Type	All-Glass Sauna Door
Door Frame Size	27.2″ × 78.7″
Glass Size	24.4″ × 77.3″
Rough Opening Required	28″ × 80″
Lighting	Marine-Grade Vapor-Proof Wall Light
Flooring	Matching Wood Duckboard
Ventilation	Upper and Lower Vent Grills
Recommended Ceiling Height	8 ft

Description

The Finnish Sauna Builders 4' x 5' x 8' Custom Indoor Sauna Kit includes precision-cut interior components designed for installation within a properly framed and insulated space.

This pre-cut sauna kit provides wall and ceiling boards, bench materials, ventilation components, duckboard flooring, and an all-glass sauna door. Framing, insulation, electrical wiring, exterior wall finish, and sauna heater are supplied separately.

Available in Western Red Cedar, Thermo Aspen/Alder, or Thermo Poplar, each wood option is selected for stability, durability, and suitability for sauna environments.

Features

• Pre-cut interior materials for 4' x 5' x 8' room
• 1×4 tongue & groove wall and ceiling boards
• 20″ deep bench boards with supports
• All-glass sauna door with wood trim
• Foil vapor barrier included
• Marine-grade vapor-proof wall light
• Upper and lower ventilation grills
• Matching duckboard flooring
• Backrests, thermometer, bucket, ladle, and headrest

What’s Included

• Interior wall and ceiling boards
• Bench boards and supports
• All-glass sauna door
• Vapor barrier
• Duckboard flooring
• Backrests
• Vent grills
• Sauna light
• Bucket and ladle
• Thermometer
• Headrest
• Installation instructions

Required for Operation

• Sauna heater (optional selection)
• Electrical connection by licensed electrician
• Framing and insulation
• Exterior wall covering

Documentation

Manual Links:

Heater Chart

Feature	Harvia KIP45B 4.5KW	Harvia KIP45W 4.5KW	HUUM Cliff Mini 3.5KW
Product Image
Power Output	4.5 KW	4.5 KW	3.5 KW
Cubic Feet Coverage	176 - 353 cu ft	176 - 353 cu ft	106 - 247 cu ft
Control Type	Built-in Control	WiFi Control	WiFi Control
WiFi Connectivity	❌ No	✅ Yes	✅ Yes
Heater Stones Included	✅ Yes	✅ Yes	✅ Yes
Railing Included	❌ No	❌ No	✅ Yes
Brand	Harvia	Harvia	HUUM
Model	KIP45B	KIP45W	Cliff Mini
Remote Control	Manual only	App-based via WiFi	App-based via WiFi

Key Differences

Power & Heating Capacity:

Harvia models: 4.5 KW (suitable for 176-353 cubic feet)
HUUM Cliff Mini: 3.5 KW (suitable for 106-247 cubic feet)

Control & Connectivity:

KIP45B: Basic built-in control panel (no remote features)
KIP45W & Cliff Mini: WiFi-enabled for smartphone control and scheduling

Design & Accessories:

HUUM Cliff Mini is the only model that includes a protective railing
All models come with heater stones included

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