"MTG FLANGE DATA,4.700 IN. LG,4.000 IN. W,6 EA 0.218 IN. NOM DIA MTG HOLES,3.500 IN. DIA APERTURE EXTENDED TO MERGE W/1.900 IN. ID TUBE OFFSET 1.510 IN.,TUBE DATA,90.0 DEG ELBOW,4.170 IN. LG 1ST LEG,2.680 IN. LG 2ND LEG,0.900 IN. LG FLEXIBLE SECTION,3.000 IN. MAJOR DIA,1.000 IN. MINOR DIA OVAL DIFFUSER SPOUT"