Lennox 42W16 Extension kit 321142-301 The HH style core contains

The HH style core contains activated charcoal to adsorb wax and organic acids that standard dessicant driers cannot trap

a precision-engineered OEM blower wheel designed for high-efficiency airflow

The durable construction ensures sustained performance in high-demand mechanical rooms where consistent air pressure monitoring is essential for building automation systems (BAS) and legacy pneumatic loops

The Heil Quaker ICP 1012477 Motor Speed Control Board is a critical genuine OEM replacement component designed for International Comfort Products (ICP) furnace and air handling units

ensuring stability in high-rise and large-scale residential hydronic systems

Lennox 42W16 Extension kit 321142-301 The HH style core containsFor field technicians and mechanical contractors, the Lennox 42W16 (LB 115012B) Vent Extension Kit is the industry standard solution for bringing rooftop installations into compliance with local building codes. Specifically engineered for Lennox LG, LD, KG 092 360, and SG 240 series units, this kit addresses critical clearance issues where exhaust outlets are situated too close to fresh air intakes. By elevating the termination point, it prevents flue