Pipe Support Block, Pyramid 25, Pipe Size 1/2 to 1 In, Max Load 25 Lb, Material of Construction Non-Metallic, Length 4 In, Width 5 In, Height 3 5/8 In, For Supporting Rooftop Pipe And To Distribute The Load Evenly And Protects The Roof Membrane Pyramid 25Innovative design won"t damage roof membranes. No tools or fasteners needed. Handle up to three 1/2", two 3/4", or one 1" pipe or conduit.Pipe Support Blocks