UniRac RapidFoot Concealor Screw 7-3/4 inches, DP4, Qty. 1, 030018C Unirac offers attachment options for the RapidRac G10. These can be used for seismic restraint and for ballast trade off, allowing for a reduction in roof dead load. Unirac recommends using the RapidFoot, which features Eco-Fasten technology by the Alpine Snow Guard Company. Other RapidFoot items in picture are not included.