1/4" - 2" Master Boot Universal Roof Flashings - Versatile Universal Flashing for multiple roofing types.1/4" - 2" Master Boot Universal Roof Flashings features include: Universal flashing can be used with any type of corrugated roofing material, ie: asphalt, plastic, tile, rubber, metal, etc. (not for hot mopped or built-up roofs) Self-sealing Step-Cone boot made of premium grade E.P.D.M., which gives it maximum resistance to weathering due to ozone amp; UV light Flexible Aluminum Alloy rim assures universal flashing form fits and has corrosion resistance - excellent for ribbed metal roofs Provides a Permanent Seal that is unaffected by expansion/contraction, vibration, ice, snow, hailstones, etc. Installs in about 10 minutes Excellent for wall penetrations - weathertight and airtight, inside or outside Easily customized with sharp knife/scissors to accommodate a broad range of diameters Slides over vent pipe amp; conforms to any roof pitch Order Qty of 1 = 1 Piece Spec Sheetnbsp;Below is more info on our 1/4" - 2" Master Boot Universal Roof Flashings