Simplified combustion air security vent

A combustion air vent assembly for use with an aperture at the exterior end of a passageway extending through an exterior wall of a building, said assembly comprising in combination:

• a) a louvered vent formed from a sheet of cold rolled steel;
• b) said vent including a louvered panel;
• c) a support extending from said louvered panel for supporting an air filter at an interior opening of the passageway, said support comprising a pair of bolts for penetrable engagement with said air filter;
• d) said vent further including top, bottom and side sections extending from said panel;
• and
• e) at least a tab extending from each of opposed ones of said sections, each of said tabs being adapted for mounting said tabs adjacent a sidewall of the passageway.

A method for venting and shielding a passageway extending through an exterior wall of a building, said method comprising the steps of:

• a) attaching sections indirectly extending from a louvered panel to the exterior wall;
• b) securing tabs extending from the louvered panel to corresponding sidewalls of the passageway;
• and
• c) displacing the louvered panel from the plane of the exterior wall juxtaposed with the first sections by a distance corresponding with second sections extending from the perimeter of the louvered panel, certain of the second sections supporting the corresponding first sections.

A combustion air vent formed as a unitary structure of a common material and adapted for use with an aperture at the exterior end of a passageway extending through an exterior wall of a building, said air vent comprising in combination:

• a) a front louvered panel;
• b) top, bottom and a pair of side sections extending rearwardly from said panel;
• and
• c) at least a tab extending from at least each of a pair of opposed ones of said sections, each of said tabs being adapted for locating said tabs adjacent a sidewall of the passageway, each of said tabs being adapted to be secured to a corresponding wall of the passageway.