FS18 – START COLLAR
18″ galvanized start collar for connecting round duct to a sheet metal or ductboard plenum. Crimped end for easy duct attachment. Standard residential HVAC ductwork fitting.
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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18″ galvanized start collar for connecting round duct to a sheet metal or ductboard plenum. Crimped end for easy duct attachment. Standard residential HVAC ductwork fitting.

ESP PE44 pin extractor tool. Removes and reinserts AMP and Molex pins from HVAC wire harness connectors without cutting or splicing wires.

Honeywell VR8345M4302 universal electronic ignition gas valve. Up to 300 CFH natural gas capacity. 24 VAC. Replaces Rheem 903596 and VR8205R2091.

PF16252 pleated air filter. MERV 8, 16″ x 25″ x 2″. Fits standard residential HVAC systems. Replace every 60-90 days for best airflow and filtration.

20″W x 10″T return air grille with fixed louver blades. White powder-coated steel. Mounts on wall or ceiling over your return duct opening.

Goodman .090″ fixed orifice piston for 5-ton systems (R-410A). Controls refrigerant flow in Goodman and Amana condensers. OEM part.

Supco SLS160 auto reset micro limit switch, opens at 160°F, closes at 120°F. Compact design with angled terminals. Universal fit for furnaces and unit heaters.

Trane CNT09648 OEM control board for A801X series furnaces. Replaces earlier CNT07940 revision. Full system management with LED diagnostic codes.

STCR5019 1/2″ staples, 1,000-pack. Heavy-duty staples for insulation, duct wrap, and upholstery. Fits Arrow T50 and compatible staplers.

40+7.5 MFD 440V dual run capacitor. Powers both the compressor and condenser fan motor. Budget-friendly TrueLine replacement for residential AC.