The Master Flow 6 in. Goose Neck Vent in Black can be used to cover exhaust pipes extending through your roof or for attic ventilation. This vent is designed to be used on 6 in. round ducts. It s made of zinc-coated galvanized steel for durability and reliability. This vent features a heavy-duty screen which helps protect against small animals from entering your home through the vent. The black finish helps this vent blend into your home s rooftop. Made of zinc-coated galvanized steel Designed for 6 in. round ducts Ideal for pitched roofs and being used for attic ventilation or to cover exhaust pipes extending through roof Seal seams with code approved mastic sealant or duct tape Install using appropriate roofing nails (not included) Heavy-duty screen helps protect against small animals from entering Ample flashing for added leak protection Black finish helps blend into rooftops Always seal flashing with approved roof sealant