Abstract: An apparatus secures ventilation cloth to a screen frame. A screen frame is oriented in an approximately vertical position. The screen frame has a plurality of segments. Each segment has a mounting surface on a face thereof. At least one of said segments has adhesive on the mounting surface thereof. A ventilation cloth is hung across the mounting surface of said one segment. The adhesive in said one of the segments is melted. The ventilation cloth is inserted in the adhesive across a length of said one of the segments.

Abstract: A frame for a ventilation screen-frame assembly includes a body having a mounting surface for receiving ventilation screen material. In one example, the body has at least three V-shaped cuts partially through it. Each V-shaped cut leaves an edge of the body uncut. The body is folded about each uncut edge so that the ends of the body meet at a corner. Each V-shaped cut subtends an angle &thgr; that is slightly less than 90 degrees, so that the folded corners are in compression. The assembly further includes a single corner key for joining the ends of the body into a closed frame. A reinforcement clip can be used in each folded corner.

Abstract: A frame includes a plurality of screen bar segments. To form the screen bar, a flat malleable strip is provided. The strip is roll-formed to form a tube having a tensioning step on its face. The tensioning step extends along a length of the tube. The tensioning step has a mounting surface, which may be the bottom of the tensioning step. A hot-melt adhesive is applied to the mounting surface. The screen is spread across the frame, so that the screen extends over the mounting surface of each screen bar segment. The screen is secured to the face of the frame with an adhesive at a plurality of positions across a length of the mounting surface of at least one screen bar segment. The adhesive may be a hot melt adhesive. The screen is inserted with a plurality of pins to intermittently suspend the screen in the adhesive across the length of the screen bar segment. An apparatus for securing the screen to the screen bar segment includes a support surface that holds a screen bar segment.