Why use this shower tray riser kit Cost of installation - major saving in labour and materials. Unique design of the easy plumb kit allows quick adjustment after settlement. Complies with building regulations particularly when tray fitted above the ground floor. Supplied with 8 adjustable feet for total stability and support. Allows easy installation on uneven surfaces - suitable for stone. No plinth is supplied with this kit. WHEN FIXING DIRECTLY TO THE SHOWER TRAY PLEASE ENSURE YOU HAVE AT LEAST 14MM CLEARANCE (THICKNESS) FOR THE SCREW. Circular Base Plates our available as an add on purchase under the stock code BASEPLATEPADS.