DB-R4 – DUCTBOARD (4’X10′ – 1″)
R-4 ductboard sheet, 1″ thick, 4’x10′. Fiberglass board with foil facing used to build or repair duct systems. Owens Corning 703-type. Cut and fold to make your own ductwork.
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Bring your old part. We'll diagnose it, find the replacement, and bench-test the new one at the counter before you leave — so you only make one trip.

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R-4 ductboard sheet, 1″ thick, 4’x10′. Fiberglass board with foil facing used to build or repair duct systems. Owens Corning 703-type. Cut and fold to make your own ductwork.

Lennox 17W82 (LB-91097C) ignition control replacement kit. Replaces multiple older Lennox furnace boards including 21L890 and 72K79. Complete kit with harness.

Robinair Premium High Vacuum Pump Oil in a 1 gallon bottle. Robinair describes it as a proprietary blend of highly refined base oils that holds viscosity at higher running temperatures and is quality tested for minimal moisture content.

55+5 MFD 440V dual run capacitor. Powers both the compressor and condenser fan motor. Budget-friendly TrueLine replacement for residential AC.

14-inch ductboard triangle made from insulated fiberboard. Used to form 90-degree turns and transitions in ductboard systems. Fits standard 14″ duct runs.

Yellow Jacket 19020 quick coupler gaskets for 1/4″, 5/16″, and 1/2″ Acme hose fittings. Replacement seals to stop hose leaks. Pack of gaskets.

Trueline 75 VA control transformer with a multi-tap primary of 120, 208, 240 and 480 VAC and a 24 VAC secondary, supplied pre-wired with a built-in fuse and a foot mounting bracket.

Rheem RH2TZ4821STANNJ 4-ton air handler with Constant Torque ECM motor. 21″ width, R-410A, SEER2 compliant. More efficient and quieter than PSC models.

20″W x 10″T return air filter grille. Holds a standard 1″ filter. Removable hinged face for easy filter changes. White steel, mounts on wall or ceiling.

Supco SHL518 high limit switch, 3-inch insertion, opens at 250°F, closes at 210°F. Auto reset. Crosses to Carrier HH12ZB250. Universal furnace replacement.