THE CRICKET ELIMINATOR: This ingenious product adds support and strength to your vent pipes, chimneys or masts while the innovative fin design cuts through and assists in the shedding of snow and ice from your roof. Installation is quick and easy. The VentSaver P383 Series is made from non-corrosive powder-coated aircraft grade aluminum and stainless steel aircraft cable. Also provided are stainless steel nuts, bolts and heavy duty 1 1/2" lag screws. The 383 series will fit any roof pitch and an infinite array of sizes from 1" to 14" around. Its 9"standing profile is designed to protect taller stacks such as chimneys, gas vents and masts. The beauty of the 383 series is the variety of applications it will fit as well as the ease of installation. NO minimum order.