Non-return valve for cooker hoods, separable stainless steel spring-loaded exhaust valve, high-sealing silicone ring for 150-180mm ducts

Eliminate odors: Simply open the backdraft damper and the exhaust valve will automatically open to vent the smoke through the exhaust air. One-way backdraft damper: Because this backdraft damper is one-way, it can firmly block outside odors and mosquitoes after closing, and the smoke will not flow back. Quick sealing: The backdraft damper can be quickly sealed after venting the smoke; the silicone sealing strip holds it tightly without leaving any gaps. Neat finish: The damper The non-return valve is made entirely of ABS material, with an integrated solid stainless steel spring, offering excellent performance. Easy installation: The non-return valve is designed to improve leveling, and the main body and fixed seat can be disassembled to speed up installation. Specification: Item Type: Non-return valve for cooker hoods Material: ABS, stainless steel, silicone Suitable for pipe diameter: approx. 150-180mm/5.9-7.1 inches Package List: 1 x Non-return valve for cooker hoods 2 x Cable ties 1 x Steel rod