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. The circular base plates and feet allow the tray to be levelled quickly and creates a full stress support across the tray. Allows easy installation on uneven surfaces - suitable for stone. No plinth is supplied with this kit.