Durable Construction: Features high-grade insulation and a terminal connector designed for HVAC sensor troubleshooting and vibration resistance

ensuring you don't have to struggle with mounting brackets or terminal alignment in the field

This OEM replacement gasket is physically and technically identical to ARM1010 (previously 100133544)

protecting the primary heat exchanger from stress fractures and overheating

replacing brittle or flattened 96451 isolators is a primary troubleshooting step when a unit heater is producing disruptive mechanical noise or cabinet rattle

Weil McLain 383-500-604 Fuses Durable Construction: Features high-grade insulationThe Weil McLain 383 500 604 is a critical 12A slow blow fuse designed specifically for the protection of advanced control modules in condensing gas boilers. For service technicians troubleshooting a blank display or a non responsive Ultra U Control module, these high amperage glass fuses are the standard requirement to safeguard line voltage circuits against transient surges without premature tripping. Unlike standard fast acting alternatives, the