Patent ID: 6817942
Filing Date: 2004-11-16
Classification: E04B,F24F

Abstract:
A vent for a crawl space type vent opening in the wall of a building, comprising:a front frame for engaging an outside face of the wall around the vent opening; a rear frame connectable to the front frame with one or more tension members adapted to extend through the opening, the rear frame including an outer portion for engaging an inside face of the wall around the vent opening, the one or more tension members when connected to the front and rear frames through the vent opening being operable by a person outside to tension the front and rear frames against the wall; first and second swappable venting plates, each adapted to be removably secured to the front frame from outside the building, the first venting plate having a greater area for venting and the second venting plate having a reduced area for reduced venting, wherein the rear frame is removably connected to the one or more tension members and sized for insertion through the front frame and the vent opening, and wherein the rear frame comprises one or more cross-members spanning the vent opening and having ends for engaging the inside surface of the wall around the vent opening.