The Perma-Boot 312 is a high performance vent pipe flashing designed for new roof and re-roof applications. The patented design allows for use on roofs pitched from 3/12 to12/12. Compatible with PVC an all other vent pipe types. A nailing flange is incorporated for traditional fastening to roof deck. Avoid using old fashioned vent pipe flashings that utilize rubber or neoprene gaskets to seal out water which fail in a matter years allowing water to enter the home and cause damage to sheetrock, insulation, paint and hardwood floors etc. The Perma-Boot will stand up to all weather extremes and is warranted for the life of the shingle. Available in Black, Brown, Weathered Wood and Gray to match your shingles. Made in the USA.