Features: 【Cowled Wall Outlet】- Provides protection against rain and wind. 【Non-Return Shutter Flap】- Can be closed when not in use to prevent unpleasant , noises, or draughts from flowing back through the duct. 【Spring-less Design】- Eliminates the need for rust-prone or breakable springs. 【Suitable for Various Applications】- for use as a termination point with bathroom or kitchen extractor fans, fans, or in-line extract fans. Can also be used in long ductwork runs for purposes like whole house ventilation, passive ventilation, positive input, air conditioning, HVAC, and heat recovery s. 【Versatile and Reliable】- Ensures the prevention of any undesirable elements and provides a solution for maintaining proper airflow. Specifications: *Product Name: Exterior wall exhaust outlet *Material: ABS *Size: 185*128*98mm，185*128*147mm，185*128*123mm *Color:White Package Content: 1x Air outlet Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Product Name: Exterior wall exhaust outlet Material: ABS Size: 185 128 98mm，185