Floor Drain backflow Preventer-2 pcs Prevent backflow, 1.4-2.4 in

Easy installation: This is a floor drain backflow preventer that does not require drilling and is suitable for drainage outlets of 1.5-2.3 inches | Item content: floor drain backflow preventer *2Pcs Includes filter screen and two silicone pads of different sizes | Applicable scenariosThis practical shower drain odor trap is suitable for various environments, including bathrooms, kitchens, and laundry rooms. | Multi functionalPrevent odors and liquid backflow, prevent mosquitoes and cockroaches from entering through the sewer