
Fukumado
Bathroom/ Wet Area
Easy to install, featuring a gapless structure that provides excellent thermal insulation. The sliding sash adopts a drop-in (Kendon-style) system for easy removal, ensuring superior cleanability. The visible frame (face width) is designed to be as slim as possible for a refined appearance.
Cold Draft Protection for Bathroom Windows
Upgrade easily with our secondary windows with excellent insulation, easy installation, and low maintenance.
Features
① Blocks Cold Air and Improves Insulation

✓ Window Surface Temp: Approx. +5°C↑
✓ Bathroom Air Temp: Approx. +2°C↑
*Reference test data (Fukui City, Fukui Prefecture – February)
*These are test data and do not guarantee actual performance. Performance may vary depending on on-site specifications and conditions.
② Easy Installation with Double-Sided Tape
No damage to the building structure. Simply fix members to the existing window frame.


▼ Watch Easy Installation Video
-Timestamps-
00:56~ Substrate inspection, adjustment, and measurement
01:53~ Cutting installation components
04:13~ Apply double-sided tape to the window frame
04:39~ Sanding cut edges
05:07~ Install frame components
06:12~ Assembling & Installing the Shoji (Sliding Doors)
③ Easy-to-Remove “Kendon-style” Shoji for Effortless Cleaning

No center divider in the frame!

Easy frame cleaning!

Simple installation and removal!
▼ Watch Easy Cleaning Video
-Timestamps-
00:07~ Shoji Screen Removal
00:12~ Cleaning
00:38~ Shoji Screen Installation
④ Sleek & Clean Fit: 16mm Face and 18mm Depth

⑤ Lightweight Resin Shoji: Shatterproof & Safe

Product Drawing

Product Specifications
Cut to any length you like before use
| Model Name | Dimensions | Code | Color | Package Contents | Package Weight | Single Piece Shipment |
|---|---|---|---|---|---|---|
| Fukumado S Set | Width 600× Height 600 | FM66W | White | 1 set ※1 | 2.6kg | ✕ |
| Fukumado M Set | Width 900× Height 900 | FM99W | White | 1 set ※1 | 5.0kg | ✕ |
| Fukumado L Set | Width 1,200× Height 1,200 | FM129W | White | 1 set ※1 | 6.6kg | ✕ |
※1: 2 vertical frames, 1 top frame, 1 bottom frame, 1 base filler member, 4 upper/lower frame members, 4 vertical frame members, 4 inside corner pieces, 2 resin panels, installation manual, user manual, warning label, double-sided tape.
Precautions for Use
・ For installation within window frames only. Do not use outdoors.
・ Do not use in sauna-type bathrooms where temperatures exceed 50°C.
・ Do not pour hot water exceeding 60°C onto the product.
・ Not suitable for 24-hour circulating bath systems.
・ After installation, ensure the product is completely secured. Improper fixing may result in looseness or falling, causing injury.
・ Do not modify or alter the product or change its intended use.
Substrate Requirements
・ Compatible substrate: Resin window frame
*For tile substrates, first install our “Multi-Use Window Frame Cover” in vertical-overlapping (vertical-dominant) configuration, then proceed with installation.
・ Do not install on damp or deteriorated substrates.
・ Confirm that the surface strength is adequate and that the window frame is clean.
Installation Precautions
・ Before installation, thoroughly clean the substrate using a neutral bathroom detergent. Remove any mold with an appropriate mold-removal cleaner. Allow the area to dry completely before starting installation.
・ Always use the designated double-sided adhesive tape.
・ Do not install in environments below 5°C, as insufficient adhesion may occur.
Existing Window Compatibility
・ Compatible exterior windows: Sliding windows and fixed (Fix) windows (maximum size: H900 mm × W1200 mm).
*Windows not listed above or exceeding these dimensions are not compatible.
・ Confirm that the surface strength is adequate and that the window frame is clean.

If the substrate is not resin, use the Multi-Use Window Frame Cover.
A new vertical-dominant specification that eliminates the need for inside-corner covers is now available.
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