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Schluter

Schluter Kerdi Board Prefabricated Shower Bench with Waterproofing Corners - Ideal for New Constructions or Bathroom Renovations - 38" Length, 11-1/2" Width, Rectangular - KBSB290970RA

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Availability: Only 3 left in stock, order soon!
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Arrives Tuesday, Oct 27
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Features

  • Waterproof Design - Completely waterproof and prepped for tiling, this design ensures a consistently dry and moisture-resistant shower environment.
  • Versatile - Designed with your needs in mind, this product seamlessly adapts to straight wall installations, ensuring it fits in any shower layout you choose.
  • Sturdy and Lightweight - Crafted to be both light and durable, this construction comfortably supports significant weight, making it a reliable choice for shower seating.
  • Sloped for Drainage - Carefully engineered with a sloped surface to prevent water pooling, enhancing shower hygiene.
  • 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.

Description

Building panels and accessories to create waterproof and ready-to-tile assemblies Schluter-KERDI-BOARD-SB is a prefabricated shower bench, made of KERDI-BOARD, for use in conjunction with the Schluter-Shower System. KERDI-SHOWER-SB is waterproof and ready for tile, leaving only sealing of joints and corners to complete waterproofing. The bench is available in triangular and rectangular configurations in the following sizes (width x depth x height). The triangular benches are 16" x 16” x 20” (41 x 41 x 51 cm) and 24” x 24” x 20” (61 x 61 x 51 cm). The rectangular benches are 38” x 11-½” x 20” (97 x 29 x 51 cm) and 48” x 16” x 20” (122 x 41 x 51 cm). KBSB290970RA KB12SN305305A KB12SN305711A1 KBSB410TA KBSB610TA KBSB4101220RA KERECK135FI2 At Schlüter-Systems, we pride ourselves on being pioneers in the tile assembly industry. Founded in 1966 by Werner Schlüter, we continue to meet the evolving demands of the industry by developing practical and effective solutions for tile installation challenges. Today, Schlüter-Systems' has evolved from a modest idea into a company with over 40 product lines recognized and utilized in various countries around the world, maintaining our commitment to innovation, quality, and service. Should I install the Schluter-KERDI-BOARD-SC curb or KERDI-BOARD-SB bench on top of or next to the KERDI-SHOWER trays? The KERDI-BOARD-SC shower curbs and KERDI-BOARD-SB shower bench are typically installed adjacent to the Schluter prefabricated shower tray. The KERDI-SHOWER- T/-TS/-TT shower tray can be cut to fit around the shower bench and curb if required. Can the Schluter-KERDI-BOARD-SB be trimmed to my desired size? Yes, the KERDI-BOARD-SB shower bench can be trimmed to the desired width using a utility knife.

Brand: Schluter


Material: Plastic, Fiberglass


Color: White/Off-white


Product Dimensions: 38"D x 11.5"W x 20"H


Maximum Weight Recommendation: 250 pounds


Item Dimensions D x W x H: 38"D x 11.5"W x 20"H


Minimum Height: 20 inches


Seat Depth: 38 inches


Material Type: Plastic, Fiberglass


Color: White/Off-white


Maximum Weight Recommendation: 250 pounds


Brand Name: Schluter


Unit Count: 1 Count


Number of Items: 1


Model Number: KBSB290970RA


Manufacturer Part Number: KBSB290970RA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Effortless Shower Renovations Made Possible with Schluter Systems Kerdi Board Shower Bench
The Schluter Systems Kerdi Board Shower Bench is a game-changer! It's incredibly easy to use, making the job quicker and hassle-free. I especially appreciated how simple it was to cut to the desired size. This bench is a must-have for anyone looking to upgrade their shower with a sturdy, reliable seating solution ... show more
Reviewed in the United States on May 4, 2024 by Javier Claros
    • Easy to install and tile
Review Image by Remodeling Contractor
I've used these on 3 jobs and they work great. Install easy and can be cut and modified as needed
Reviewed in the United States on July 27, 2024 by Remodeling Contractor
    • It’s Scluter! Need I say more!
This is an excellent bench and my customers are thrilled with the fact that they can use their rain head if they want to or they can use their magnetic attachable sprayer which reaches them while they are sitting on the bench and they can sit on the bench and reach the niche that I installed. Schluter makes quality products although I do think that these benches need to be made out of the 2 inch Kerdi board and not the half inch Kerdi board because it makes them flimsy. If they were made out of 2 inch curdy board they would be solid as a rock. ... show more
Reviewed in the United States on July 30, 2022 by Jordan L.
    • Shower build
Stronger than it looks,and you could cut to fit if needed.
Reviewed in the United States on September 12, 2025 by V.S.
    • Great Shower Bench Form
Review Image by Manny
This Schluter product makes installing a bench in the shower super easy and trouble free. It can be cut down if you need it smaller. Just take your time and measure twice before cutting. It is light weight but super strong. It is capable of supporting the most sturdy individual.
Reviewed in the United States on December 14, 2018 by Manny
    • Perfect fit!
Review Image by L goforit
Same as Lowes but at a cheaper price
Reviewed in the United States on July 28, 2025 by L goforit
    • Saves time
Between using a premade bench and actually framing one out, boarding it and water proofing it I will always go with the premade one just because of how much time it saves while building a shower.
Reviewed in the United States on April 20, 2024 by Amazon Customer
    • Makes building a shower bench effortless
If you plan to do a bench in your shower hands down use this. It made adding the bench pretty much effortless. I am confident in the angles of the seat and that it will all be water tight and offer enough support.
Reviewed in the United States on January 9, 2020 by TS Stevenson

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