Better-Bench InvisaBolt Floating Shower Bench Support System INVISABOLT™ floating bench mounting system designed for Better-Bench shower bench installations. Size: 3/4" x 17.5" The Better-Bench InvisaBolt™ Support System is designed to create a clean floating bench appearance while providing additional structural support for selected Better-Bench shower bench installations. This concealed support system is compatible with BB-ADJR adjustable benches and BB-R26 bench installations where additional support may be required depending on mounting configuration. Compatible Better-Bench Models BB-ADJR Adjustable Bench BB-R26 Better Bench Features Creates a clean floating bench appearance Designed for Better-Bench shower bench systems Supports wall-to-wall and floating bench installations Compatible with wet and dry installations Long-lasting corrosion-resistant materials Designed for tile and waterproof shower systems Can be installed before or after tile installation Self-supporting mounting design Better-Bench Load Capacity 400 lb engineered load capacity on Better-Bench products 100 lb load capacity on Better Tray BT-17 No additional waterproofing required when properly installed Support Requirements for BB-R26 Three-wall installations require no additional support Two-wall installations with one open side require one BT-17S or one InvisaBolt support Free-floating installations require two InvisaBolt supports with minimum 4x6 wood blocking Support Requirements for BB-ADJR Wall-to-wall installations up to 36" require no additional support Wall-to-wall installations up to 63" require additional BT-17S or InvisaBolt supports Open-end and floating installations require multiple InvisaBolt supports depending on span length Installation Requirements Minimum 4x6 structural wood blocking required for InvisaBolt installations Wood blocking must be flush with stud faces before substrate installation Suitable for U.B.C. approved tile substrates Compatible with cement board, mortar bed, foam board, and waterproof systems Compatible Substrates Cementitious backer boards WonderBoard HardieBacker Durock Mortar bed installations Schluter systems Wedi board Approved tile substrate systems How to Install the InvisaBolt System Install minimum 4x6 structural wood blocking before substrate installation Expand adjustable bench to required width Locate InvisaBolt mounting locations Drill mounting holes into blocking Install InvisaBolt supports and tighten carefully Mount bench and fill using dry pack mortar Tile and finish installation as desired Important: Do not use thin-set mortar to fill Better-Bench products. Use dry pack deck mortar or approved mortar mix only. Frequently Asked Questions Can Better-Bench products support weight? Yes. Better-Bench products are engineered for a 400 lb live load capacity when properly installed. Does the system require waterproofing? No additional waterproofing membrane is required when installed according to manufacturer instructions. Can the adjustable bench be cut down? Yes. The adjustable bench can be trimmed to smaller sizes using a metal cutting blade. Can Better-Bench products be installed over finished tile? Yes. Better-Bench systems can be mounted directly over finished tile surfaces or directly to approved substrates. Where can Better-Bench products be installed? Suitable for showers, bathrooms, wet areas, steam showers, and dry installations. Made in the U.S.A. Helpful Resources Better Bench Installation Videos Better Bench Rectangle Bench Installation Instructions PDF Better Bench Bolt Installation Instructions PDF Better Bench and Recess It FAQ Ledgeline Linear Shelf Installation Instructions PDF Related Products Shop All Ready to Tile Seats & Shelves Shop Better Bench BB-24 Triangular Shower Bench Shop Better Bench BB-30 Triangular Ready to Tile Shower Bench Shop Better Bench BT-17 Triangular Shower Shelf Shop Better Bench Adjustable Shower Bench 19" to 32"