CODE NO                               SIZE

SUPPLY PLENUM BOX FOR AIR HANDLER UNIT

13SPB                    13½" X 14" X 15"

17SPB                    17½" X 14" X 15"

20SPB                    20½" X 14" X 15"

24SPB                      24" X 14" X 15"

CODE NO                            SIZE

RETURN PLENUM BOX FOR AIR HANDLER UNIT

14RPB                   14" X 20" X 15"

18RPB                   18" X 20" X 15"

20RPB                   20" X 20" X 15"

24RBP                   24" X 20" X 15"

CODE NO                            SIZE

RETURN PLENUM BOX FOR GAS FURNACE UNIT

14PBGF                14" X 26" X 15"

17PBGF                17" X 26" X 15"

21PBGF                21" X 26" X 15"

24PBGF                24" X 26" X 15"