Keep your bathroom, kitchen, or basement odor-free with our 4-inch hole-sized floor drain preventer. Made from durable copper, this anti-backflow plug is designed to prevent sewer odors, Overflow, and rat & roach entry. The gravity-controlled closure automatically opens while draining and safely closes when not in use, providing a seamless, clean performance. The 2-inch outer diameter and 3-inch height ensure a perfect fit for your floor drain plumbers. Effortlessly replace clogged floor drains with our odor-proof solution.","Easily install our anti-backflow plug with just the floor drain cover. The 90-degree capped design allows for quick and smooth drainage without water pooling. Durable copper construction ensures long-lasting use in kitchens, bathrooms, or basements. Stay ahead of plumbing issues by preventing sewer smells and keeping your space clean and hygienic.