3mm) American Metal Predicts 12- (3116mm) 12-1/C (3l 1mm) 20-3/4- (527mm) Metal-Fab Sure Seal: 24' (610mm) 20-5V (524mm) 29-1/8" (74Ornm) Se:Andy Secure Vent. — ' I i X 36- (914mm) 29- (737mm) 37-112- (953mm) Industrial Chimney Company: 48' ( I 21 ginvn) 37-7/16' (951mm) 45-15116' i1167mm) Not