Use Camco RV Universal Vent Installation Kit with Butyl Tape to replace or install roof vents, side mount vents, plumbing stacks and refrigerator vents. This kit comes complete with screws, instructions and 3/4" x 8' butyl tape for use with rubber roofs. Hardware included 3/4" x 8' roll of butyl tape included Instructions included Use with roof vents, plumbing stacks, side-mount vents, etc. For use with rubber roofs