OEM If you are dealing with sewer odor issues, this filter can solve your problem. Forget about the unpleasant smell and enjoy your home as it should be. WARNING! The filter is NOT a stopper. It does NOT block water flow in the drain—water passes through the filter almost at the same rate. The filter only blocks odors and insects coming from the opposite direction, from the sewer toward the house. PRODUCT 2-in-1: 1. Stops sewer odors; 2. Collects hair and other debris, preventing drain clogs. The filter is compatible with three types of drainage: 1. Floor drainage (straight, no elbow); 2. Sink drainage (bathroom and kitchen); 3. Washing machine drainage. IMPORTANT! The filter is NOT compatible with floor drains that include an elbow. The filter can only be used for drains and siphons with Ø45 mm. EASY TO MOUNT: No special tools or plumber needed for installation. Instalare