Critter Quitter Plumbing Vent Repair Flashing for 4 in. Lead Flashing (3 in. Dia Vent) Repairs Damaged Plumbing Vents Sealed With Lead Without Removing Shingles. Keeps Frogs and Rats Out of Toilets Slides Over Existing Flashing Making Repair Easy, No Need to Call an Expensive Contractor Injection Molded UV Stabilized Polypropylene Construction for Long Life Embossed Pitch Lines and Pre Drilled Screw Holes Make Field Cutting and Installation Quick and Easy