The DiversiTech® ISO-4 Iso-cube is a 4 in. x 4 in. x 3/4 in. natural rubber anti-vibration pad designed to reduce vibration and noise emanating from refrigeration and air conditioning equipment. The circular design in each pad offers a suction cup effect, which eliminates the need to bolt the pads down. The 4 in. pad can be cut or torn into four 2x2 in. segments. These 50 durometer pads will withstand a load of 180 psi with greater resiliency. Diversitech Iso-Cube Anti-Vibration Pad, 4 in Length, 4 in Width, 3/4 in Depth, Rubber, Import