Oatey No-Caulk 3 In. Aluminum Base Pipe Flashing is designed to provide a leak-proof installation around vent stacks, ensuring your roofing system remains secure and protected. This flashing features an exclusive one-piece construction that s a reliable seal every time it is installed. The elastomeric collar is specially designed to accommodate the natural expansion and contraction of the vent stack, maintaining a tight fit throughout temperature changes. Crafted from durable .032 aluminum, the base is lightweight yet built to last, ing a practical and long-lasting flashing solution. Installation is simple and efficient as the flashing easily slips over the vent stack, automatically adjusting to both the pipe size and roof angle while staying ly flat on the roof surface. This product is an excellent choice for sealing and protecting vent pipes on various roofing types. Model Number: 12949