Keep the elements from entering your outdoor dryer vents with our Louvered Dryer Hood with Bird Guard This hood measures 4” and is easy to remove for cleaning. The bird guard helps keep birds and pests from entering outdoor dryer vents. It's constructed from durable and weather resistant material with UV inhibitor added to hood to prevent sun damage and cracking. This hood has a melting point of 325 F or 163 C. · Deflecto was founded on innovative, problem solving products. For over a half century, we have built a tradition of discovering and meeting needs with invention and dependable manufacturing. Today, Deflecto is the world's largest chair mat, bicycle reflector and dryer venting manufacturer and a global leader in sign and literature holders, office workspace accessories and other air distribution products.