Filter Base

17.5X6" BOX

21"X6"BOX

17.5"X 12"BOX

24.5X6 BOX

28 X 17.5 X 12 FURNACE BOX W/SLIDING FILTER TRAY

FURNACE BOX 17.5"X18" TALL NO FILTER RACK

21X12" BOX

FURNACE BOX W/ FILTER TRAY 14"W X 18"T

FURNACE BOX 21"X18" TALL NO FILTER RACK

FURNACE BOX W/ FILTER TRAY 17 1/2 W X 18"T

FURNACE BOX W/ FILTER TRAY 21"W X 18"T

24.5X12" BOX