704SHU Specifications

704SHU Overview

Exterior Footprint: 28.13 sq. ft.
Interior Space: 25.06 sq. ft.
Exterior Dimensions: 70.91" W × 57.13" D × 78.94" H.
Interior Dimensions: 67.40" W × 53.54" D × 74.02" H.

 240V / 30A Dedicated Circuit
4500W Heater Efficient Heating
Up to 194°F Temperature Setting
3-Year Warranty Long-term Protection
Product Overview
Model 704SHU
Installation Location Indoor
Footprint 28.13 sq. ft.
Wood Type Canadian Hemlock Wood
Material Treatment Chemical-free heat treatment
Seating Capacity 3-4 adults
Installation Surface Stable, solid and level base
Electrical & Heater System
Electrical Requirements 240V / 30A
Power Connection Plug: NEMA 6-30P
Required outlet: NEMA 6-30R
Rated Heater Output 4500W
Heater Element Material Japanese SUS316L stainless steel
Power Cable Length 6.2 ft. / 190 ± 5 cm
Power Cord Position Rear‑right corner inside top box (front‑facing view)
Temperature Range 95°F–194°F / 35°C–90°C
Timer Settings Minimum: 10 min
Maximum: 60 min
Heating Performance
Warm-Up Time — Warmer Conditions
To 149°F: Approx. 23–33 min To 194°F: Approx. 42–55 min
Warm-Up Time — Colder Conditions
To 149°F: Approx. 34–44 min To 194°F: Approx. 58–72 min
Controls & Comfort Features
Control Panel LCD control panel
App or Remote Control Not supported
Bluetooth Audio

Dual Bluetooth Speakers

(BT Speaker)

Reading Lights 2
Negative-Ion Panels located on back panel and inner front door
660nm Red Lights 2 integrated lights
Ventilation 2 vents: air inlet and outlet
Vent Opening 4.72" W × 5.51" H
Dimensions & Construction
Exterior Dimensions 70.91" W × 57.13" D × 78.94" H
Interior Dimensions 67.40" W × 53.54" D × 74.02" H
Recommended User Height Up to 188 cm (74.02")
Seat Dimensions

53.39" W × 20.00" D × 3.31" H

47.24" W × 20.00" D × 3.31" H

Interior Seat Height 29.88" H
Footrest Dimensions 67.24" W × 13.31" D × 3.31" H
Interior Footrest Height 14.13" H

Glass Door

Thermally insulated,
6 mm Green‑Tinted tempered glass
Right‑hand swing

Seat Weight Capacity Up to 240 lbs. per seat
Wind Resistance Level 7
Roof Load Capacity Up to 200 lbs.
Modular Construction Easier assembly and removal
Recommended Installers 2-3 People
Installation Clearance ≥3‑inch gap on the side walls ≥ 4 inches of clearance at the rear. ≥ 12 inches of clearance above the ceiling
Packaging & Delivery
Number of Packages: 8 Boxes

Box A: 154.32 lbs (70.0 kg) — 61.22" × 75.00" × 9.17"

Box B: 173.72 lbs (78.8 kg) — 77.95" × 28.54" × 6.50"

Box C: 150.80 lbs (68.4 kg) — 77.24" × 57.28" × 7.48"

Box D: 125.66 lbs (57.0 kg) — 77.36" × 74.80" × 5.91"

Box E: 45.86 lbs (20.8 kg) — 56.97" × 23.62" × 9.13"

Box F: 22.05 lbs (9.2 kg) — 69.49" × 15.16" × 4.13"

Box G: 22.93 lbs (10.4 kg) — 13.19" × 13.19" × 17.32"

Box H: 22.49 lbs (10.2 kg) — 12.20" × 12.99" × 22.44"

Approximate Packaged Weight 716.06 lbs.
Installation Service Not included; contact HKXSC to check local service availability
What's Included
Included Accessories

1 × sauna heater

1 × sauna stone set

1 × wooden bucket and ladle

1 × towel ( 35"×20" & 67"×20" )

1 × Thermal Insulation

Warm-up times are estimates and may vary depending on ambient temperature, humidity, ventilation, electrical supply and installation conditions. Product measurements may have minor manufacturing tolerances.