49190 – GAUGE BOOTS (3-1/8″ PROTECTIVE RUBBER COVERS)
Yellow Jacket 49190 protective gauge boot set — red and blue rubber covers for 3-1/8″ manifold gauges. Cushion against drops and impacts without blocking the gauge face.
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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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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Yellow Jacket 49190 protective gauge boot set — red and blue rubber covers for 3-1/8″ manifold gauges. Cushion against drops and impacts without blocking the gauge face.

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.

12″ x 25′ insulated flex duct (R8 fiberglass insulation). Standard residential HVAC flexible ductwork for supply air runs. Quietflex brand.

9″ 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.

8″ x 8″ x 8″ galvanized duct wye. Splits one 8″ round duct into two equal 8″ branches. Standard fitting for residential HVAC ductwork.

14″W x 8″T 2-way supply register with stamped steel face. White powder coat. Built-in multi-shutter damper for airflow control. Wall or ceiling mount.

Three-pole 40A contactor with 120V coil (C340B/DP401203). For 3-phase AC and commercial HVAC applications. Silver cadmium oxide contacts by Supco.

PF16254 pleated air filter. MERV 11, high-capacity 16″ x 25″ x 4″. Fits standard residential HVAC systems. Replace every 6-12 months for best airflow and filtration.

Square D QO200TR 60-amp AC disconnect switch. Non-fusible, NEMA 3R weatherproof, switch-style pullout. Required by code next to every outdoor AC condenser.

7/8″ sweat suction line filter drier, 16 cu. in. Installed on the suction side after a compressor burnout to remove acid and debris. Protects the new compressor.