For the fasteners with Stainless Steel (SS) wings, longer installation screws are available for thicker wall substrates or to mount through thicker objects onto the wall. For fasteners with Fire-Retardant Plastic (FRP) wings, longer installation screws will allow thicker objects to mount to the wall, but the wall substrate must not exceed 1.2″ (30.5mm) thick. Please contact support@wingits.com for more info.