Abstract: A Ladder Shelf System has a paint can retainer that has attachment slots for a painting device tray at its bottom portion. The painting device tray when reverse attached to the paint can retainer serves a support for the placement of a paint tray legs in slots of the painting device tray. A ladder is held to the paint can retainer using a dual member holder where each member thereof is held to an opposite side of the paint can retainer. Cutouts in the paint can retainer hold the wire holder of a paint can as necessary.

Abstract: An exhaust hood having an inverted V-shaped interior, the walls comprising the inverted V including grease filters and the apex of the inverted V lying adjacent to an exhaust duct to be placed in communication with an exhaust fan. The interior of the hood thus being shaped like an inverted funnel, rising gases and entrained contaminants are directed to the grease filters and thence to the exhaust duct.

Abstract: A water washed air scrubber in which the contaminated air is first directed toward the surface of a bath of water and cleaning agent at relatively high velocity to create adequate turbulence to achieve a scrubbing action to remove a majority of the contaminate, and thereafter passed through a filter to remove any remaining liquid and/or contaminate.

Abstract: An air ventilation system for use in conjunction with a cooking exhaust hood for exhausting cooking vapors, odors and the like from the air space above a commercial kitchen stove. The exhaust hood defines an air space above the stove and includes an exhaust fan which draws a predetermined amount of air from the air space between the hood and the stove. The hood includes a primary air passage along the internal front perimeter of the hood canopy for inducing air into the air space to replenish a substantial portion of the air exhausted through the hood. Air is supplied to the primary air passage by means of a motorized fan drawing outside air into the passage.