1. Easy to install, just fix it with screws. 2. With a small buckle on the switch, it can be closed manually. It can also be turned on and off automatically along with the range hood fan. 3. Material: PP 4. Opening size: 10.3 x3.5 inches 5. Hole depth: 1.8 inches 6. Application: widely used in exterior vents of RV bodies and range hood vents
