Are you still looking for a practical and reliable range hood check valve? If you are, then you can see our product. This check valve is an anti- range hood base, very sturdy, not easy to damage, durable and very practical. Easy to install it to your kitchen . workmanship and materials ensure a and perfect details. Features - Color: Silver -Material:Stainless Steel - Size: 18.50X18.50X4.30cm/7.27X7.27X1.69in - Size: 55.00X1.20X1.00cm/21.61X0.47X0.39in - Well selected high grade material, very durable for a long term use. The check valve is carefully crafted, good texture, not easy to damage. - Exhaust vent cover louvered close automatically when not in use and the range hood outside vent stops unpleasant , noises,or rain flowing back through the dryer exhaust vent cover flap. - This product's appearance design is simple and generous, but the product is reliable and practical. - The product can be used for restaurant's kitchen, personal home kitchen, hotel and some other places. - Cost-effective, you can buy this practical product at an . Package list: 5 x Check Valve 5 Clamp