Lec Popping Noise Suppression Air Conditioner Insect Repellent Cap

Lec Popping Noise Suppression Air Conditioner Insect Repellent Cap The cap blocks large insects such as cockroaches while the agent blocks small insects A backflow of outside air from the drain hose is prevented by a check valve which suppresses the popping sound of the air conditioner The agent compounded in the cap has an insect repellent effect of about 6 months Suitable for use on drain hoses with inner diameters of 14mm and 16mm