Flexi Foot with Strut Kits. These feet can support pipework, cable tray, and can also be used to mount air conditioning units, air source heat pumps and a variety of outdoor equipment. Solar thermal and solar photovoltaic on flat roof installations can also be accommodated. Made from heavy-duty recycled rubber. The 21x41mm galvanised steel strut is supplied bonded the rubber. Drain slots are moulded to the underside of the foot.