15B/MGB175/200 4 HOLE MNFLD

15B/MGB225/250 5 HOLE MNFLD

15B/MGB275/300 6 HOLE MNFLD

COLLAR DRFT IND 4" (4RDH)

COLLAR DRFT IND 3" (3RDH)

VENT INCREASE COL. 3"-4"(3RN4)

MGB/DV175/300 MNFLD BRKT

WNDW OB BASE USC

Inducer Gasket

MNFLD USC3