8 x 29.75 (duct opening size) Square Pattern - 3/16" steel - No screw holes - with lip - Black Finish - Minimal border along one long side - CAD Requested (RR285-12) = $315
7-7/8 x 13-1/2 (duct opening size) Square Pattern - 3/16" steel - No screw holes - with lip - Black Finish - Minimal border along one long side - CAD Requested (RR154-70) = $171
