0502025 – JOHNSON BOX
Johnson Box filter rack, 20×25. Solid metal sides with built-in duct connections — mounts inline or at the air handler. Holds a standard 20×25 filter.
Showing 1–48 of 131 results

Johnson Box filter rack, 20×25. Solid metal sides with built-in duct connections — mounts inline or at the air handler. Holds a standard 20×25 filter.

Rex Rack filter rack, 16×25. Mounts between ductwork and your air handler or furnace for horizontal installations. Holds a standard 16×25 filter. Built-in duct flange.

Rex Rack filter rack, 20×25 with access door on the 20″ side. Mounts between ductwork and your air handler for horizontal installations. Holds a standard 20×25 filter.

Snap-lock round duct pipe, 16 in. diameter by 3 ft long. Snaps together by hand along the seam for straight runs of round duct.

18 inch x 3 foot galvanized snap-lock round duct pipe. Catalog number 10318, in stock in Dallas.

5 inch x 5 foot galvanized snap-lock round duct pipe. Catalog number 10505, in stock in Dallas.

Galvanized sheet metal duct elbow for changing direction in a round duct or vent run.

Galvanized sheet metal duct elbow for changing direction in a round duct or vent run.

13.5″ x 19.5″ x 36″ R6 insulated galvanized plenum. Connects your air handler or cased coil to the ductwork. Lined with fiberglass insulation to reduce noise and sweating.

16.5″ x 11.5″ x 36″ R6 insulated galvanized plenum. Connects your air handler or cased coil to the ductwork. Fiberglass lined to reduce condensation and noise.

16.5″ x 19.5″ x 36″ R6 insulated galvanized plenum. Connects your air handler or cased coil to the ductwork. Fiberglass lined to cut noise and prevent sweating.

16″ x 21″ x 36″ R6 insulated galvanized plenum. Connects your air handler or cased coil to the ductwork. Lined with fiberglass insulation to reduce noise and condensation.

19.5″ x 20″ x 36″ R6 insulated galvanized plenum. Connects your air handler or cased coil to the ductwork. Fiberglass lined to reduce condensation and noise.

20″ x 11.5″ x 36″ R6 insulated galvanized plenum. Connects your air handler or cased coil to the ductwork. Fiberglass lined to reduce condensation and noise.

23.5″ x 11.5″ x 36″ R6 insulated galvanized plenum. Connects your air handler or cased coil to the ductwork. Fiberglass lined to cut noise and prevent sweating.

24″ x 21″ x 36″ R6 insulated galvanized plenum. Connects your air handler or cased coil to the ductwork. Fiberglass lined to reduce condensation and duct noise.

25″ x 22″ x 36″ R6 insulated galvanized plenum. Connects your air handler or cased coil to the ductwork. Fiberglass lined to reduce condensation and noise.

5″ round duct damper with key handle. Controls airflow to individual rooms by opening or closing the damper blade. Galvanized steel.

6″ round duct damper with key handle. Controls airflow to individual rooms by opening or closing the damper blade. Galvanized steel.

7″ round duct damper with key handle. Controls airflow to individual rooms by opening or closing the damper blade. Galvanized steel.

8″ round duct damper with key handle. Controls airflow to individual rooms by opening or closing the damper blade. Galvanized steel.

9″ round duct damper with key handle. Controls airflow to individual rooms by opening or closing the damper blade. Galvanized steel.

10″ round duct damper with key handle. Controls airflow to individual rooms by opening or closing the damper blade. Galvanized steel.

12″ round duct damper with key handle. Controls airflow to individual rooms by opening or closing the damper blade. Galvanized steel.

14″ round duct damper with key handle. Controls airflow to individual rooms by opening or closing the damper blade. Galvanized steel.

16″ round duct damper with key handle. Controls airflow to individual rooms by opening or closing the damper blade. Galvanized steel.

Galvanized duct reducer, 5″ to 4″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 6″ to 4″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 6″ to 5″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 7″ to 5″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 7″ to 6″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 8″ to 6″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 8″ to 7″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 9″ to 7″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 9″ to 8″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 10″ to 8″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 10″ to 9″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 12″ to 9″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 12″ to 10″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 14″ to 10″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 14″ to 12″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 16″ to 12″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Galvanized duct reducer, 16″ to 14″. Transitions between two different round duct sizes in a supply or return run. Crimped end for easy connection.

Lennox cabinet corner post for air conditioner and heat pump outdoor units, 36 in. tall in a quartz gray finish.

Uninsulated galvanized register boot, 10×10 opening with 10″ round duct connection. Solid galvanized steel construction for unconditioned spaces or commercial applications.

Insulated galvanized register boot, 10×6 opening with 6″ round duct connection. Internally lined to reduce condensation and noise. Standard residential size.

Insulated galvanized register boot, 10×8 opening with 8″ round duct connection. Internally lined to reduce condensation and noise. Fits standard 10×8 floor or wall registers.

Uninsulated galvanized register boot, 12×12 opening with 12″ round duct connection. Solid galvanized steel construction for unconditioned spaces or commercial applications.