VentSaver HD Stove Chimney Pipe Protect Metal Roof Protects Vent Pipes, Masts and Chimneys on sloped metal building roofs! Roof Cricket Eliminator for Metal Buildings! The VentSaver HD will fit any roof pitch and an infinite array of pipe sizes from 1" to 14" around. Also provided are stainless steel nuts, bolts and heavy duty 1 1/2" lag screws for attaching base to 1 1/2" of structural wood. The VentSaver cuts the snow and ice like a shark fin through water!