TBDI – DIFFUSER REGISTER (DROP CEILING, 24″ GRID, INSULATION BACK, 3-CONE)
24″ x 24″ drop ceiling diffuser with 3-cone design for 4-way airflow. R6 insulated back. White steel. Lays into standard T-bar ceiling grid.
Walk in. We test every part free at the counter. Open to homeowners, contractors, and multifamily — no account or minimum order.
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Ten departments, organized the way our counter is. Every category is on the shelf today.
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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24″ x 24″ drop ceiling diffuser with 3-cone design for 4-way airflow. R6 insulated back. White steel. Lays into standard T-bar ceiling grid.

80V silicon nitride ignitor for Trane furnaces. Replaces IGN00145 and IGN00117. Part 768A-815. Direct fit for Trane 80V systems.

Yellow Jacket 42036 Series 41 manifold gauge set with 60″ PLUS II hoses. Brass body, 3-1/8″ gauges. Rated for R-32, R-454B, and R-410A — ready for next-gen refrigerants.

Clear Blue Advance UV-C germicidal light for HVAC systems. 16-inch UV lamp mounts inside the air handler near the evaporator coil to kill mold, bacteria, and viruses.

8″W x 4″T 3-way supply register with stamped steel face. White powder coat. Built-in multi-shutter damper for airflow control. Wall or ceiling mount.

40oz tinning hammer with polished striking face and wooden handle. Built for bending, seaming, and forming sheet metal ductwork in HVAC installations.

30″W x 20″T return air grille with fixed louver blades. White powder-coated steel. Mounts on wall or ceiling over your return duct opening.

Irwin IRHT81736 ratcheting tubing cutter. Cuts copper, brass, PVC, and aluminum from 1/4″ to 1-1/8″ OD. Ratchet action for tight spaces.

R40403-003 integrated furnace control board (ST9120 series). Replaces older ST9120A/B/C/G models. Controls blower, inducer, and ignition timing.

Supco 3W3 hard start kit for 4-5 ton compressors. 3-wire design with potential relay and start capacitor. Heavy-duty option for the largest residential systems.