---
product_id: 12764163
title: "Schluter Kerdi Board Prefabricated Shower Niche with Pre-Sealed Inside Corners for Bathroom Renovation - 12\" Width, 12\" Height - KB12SN305305A"
brand: "schluter"
price: "¥24866"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/12764163-schluter-kerdi-board-prefabricated-shower-niche-with-pre-sealed-inside
store_origin: JP
region: Japan
---

# 100% waterproof vapor-tight design Pre-sealed inside corners, no assembly needed 10-year limited warranty for peace of mind Schluter Kerdi Board Prefabricated Shower Niche with Pre-Sealed Inside Corners for Bathroom Renovation - 12" Width, 12" Height - KB12SN305305A

**Brand:** schluter
**Price:** ¥24866
**Availability:** ✅ In Stock

## Summary

> 🚿 Elevate your shower game with leak-proof luxury and timeless style!

## Quick Answers

- **What is this?** Schluter Kerdi Board Prefabricated Shower Niche with Pre-Sealed Inside Corners for Bathroom Renovation - 12" Width, 12" Height - KB12SN305305A by schluter
- **How much does it cost?** ¥24866 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/12764163-schluter-kerdi-board-prefabricated-shower-niche-with-pre-sealed-inside)

## Best For

- schluter enthusiasts

## Why This Product

- Trusted schluter brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Durable materials ensure your niche stays pristine and functional with minimal maintenance.
- • **Design Flexibility:** Seamlessly integrates with any tile style and Schluter profiles for a sleek, modern shower niche.
- • **Effortless Waterproofing:** Keep your shower 100% moisture-proof with vapor-tight construction that guards against leaks and mold.
- • **Plug-and-Play Installation:** Pre-sealed corners and no assembly required means faster, hassle-free bathroom upgrades.
- • **Warranty-Backed Confidence:** Enjoy a decade of protection with a 10-year limited warranty when installed per guidelines.

## Overview

The Schluter Kerdi Board Prefabricated Shower Niche (12"x12") offers a fully waterproof, vapor-tight solution with pre-sealed inside corners for quick installation. Designed for compatibility with Schluter profiles, it enhances both aesthetics and functionality in bathroom renovations. Crafted for durability and backed by a 10-year limited warranty, this glossy white, no-assembly-required niche ensures a worry-free, stylish shower upgrade.

## Description

Schluter Kerdi Board Prefabricated Shower Niche with Pre-Sealed Inside Corners for Bathroom Renovation - 12" Width, 12" Height - KB12SN305305A

## Features

- Waterproof Design - Delivers full moisture protection through a tough, vapor-tight construction, ensuring a worry-free bathroom environment.
- Versatile - Easily adapts to various designs, making it suitable for a range of tile choices and bathroom styles.
- Optimal Compatibility - Ideal for use with Schluter profiles, this niche enhances both the aesthetic appeal and functionality of your shower space.
- Built for Longevity - Crafted with durability in mind, this shower niche effortlessly maintains its functional elegance and requires minimal upkeep, simplifying your bathroom routine.
- Long-Term Coverage - Backed by a 10-year limited warranty against manufacturing defects when installed per the Schluter Installation Handbook and Technical Data Sheet, following all guidelines and industry standards in effect at the time.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Shape | Rectangular |
| Unit Count | 1.0 Count |
| Assembly Required | No |
| Color | White |
| UPC | 787721465836 |
| Manufacturer | Schluter Systems |
| Part Number | KB12SN305305A |
| Item Weight | 13.4 ounces |
| Product Dimensions | 18 x 17.3 x 4.4 inches |
| Item model number | KB12SN305305A |
| Is Discontinued By Manufacturer | No |
| Finish | Glossy |
| Thickness | 4.4 Inches |
| Item Package Quantity | 1 |
| Certification | certified frustration-free |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Style:** Modern
- **Finish Type:** Glossy
- **Material:** kerdi board
- **Brand:** Schluter
- **Installation Type:** Screw-In

## Images

![Schluter Kerdi Board Prefabricated Shower Niche with Pre-Sealed Inside Corners for Bathroom Renovation - 12" Width, 12" Height - KB12SN305305A - Image 1](https://m.media-amazon.com/images/I/71cCDpq+Y9L.jpg)
![Schluter Kerdi Board Prefabricated Shower Niche with Pre-Sealed Inside Corners for Bathroom Renovation - 12" Width, 12" Height - KB12SN305305A - Image 2](https://m.media-amazon.com/images/I/71cCDpq+Y9L.jpg)
![Schluter Kerdi Board Prefabricated Shower Niche with Pre-Sealed Inside Corners for Bathroom Renovation - 12" Width, 12" Height - KB12SN305305A - Image 3](https://m.media-amazon.com/images/I/61jbeZwctIL.jpg)
![Schluter Kerdi Board Prefabricated Shower Niche with Pre-Sealed Inside Corners for Bathroom Renovation - 12" Width, 12" Height - KB12SN305305A - Image 4](https://m.media-amazon.com/images/I/71HBEWziYeL.jpg)

## Questions & Answers

**Q: How long do I have to wait before I can install tile on Schluter-KERDI-BOARD?**
A: Tile can be installed on KERDI-BOARD immediately, except on curved walls and non-bearing partitions where curing is needed. In showers, water testing, recommended and sometimes required by code, should be done 24 hours after membrane installation.

**Q: Can I install glass tile over Schluter-KERDI-BOARD?**
A: Glass tiles are unique products and may require special consideration.

## Frequently Bought Together

- Schluter Kerdi Board Prefabricated Shower Niche with Pre-Sealed Inside Corners for Bathroom Renovation - 12-Inch Width, 12-Inch Height - KB12SN305305A
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- Schluter Kerdi Board Prefabricated Shower Niche with Adjustable Kerdi-Board Shelf - Ideal for any Bathroom Renovation - Waterproof, Vapor-Tight, 12-Inch Width, 28-Inch Height - KB12SN305711A1

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**Shop now:** [https://www.desertcart.jp/products/12764163-schluter-kerdi-board-prefabricated-shower-niche-with-pre-sealed-inside](https://www.desertcart.jp/products/12764163-schluter-kerdi-board-prefabricated-shower-niche-with-pre-sealed-inside)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-31*