Streamlined profile, smaller footprint and easier installation than previous models. Only two screws to install vent cover--special hidden tabs lock over the flap/insect seal. Kit includes vent cover, metallic flexible ducting, screw clamps, flap/insect seal with built-in tailpipe and four screws, plastic interior ring and two vent cover screws. 6 1/2"H x 6 3/16"W x 1 5/8"D.