THIS ITEM IS FOR TPO & should be heat welded by an experienced roof professional. This item does not come with water block/mastic.

The John's Manville Brand TPO Pipe Boot with clamping ring in gray color is a durable and reliable roofing accessory suitable for roofs. Made from Thermo Plastic (TPO), this rectangular-shaped roof penetration boot features a smooth finish and is corrosion-resistant, leak-proof, and weldable. With a width of 10 inches and a height of 10 inches, this "Witches Hat" model also comes with a collar for easy installation. The manufacturer offers a 10-year warranty, making it a long-lasting and quality product for your roofing needs.