Lennox 99M66 Heater Kit 320734-701 What is the difference between

What is the difference between 311616 and 311616/U

a separate rebuild kit is required

it includes a foot-mount chassis and 1/4-inch quick connect terminals for rapid field replacement

Universal aftermarket covers often lack the precise dimensions needed to maintain the correct drafting pressure required by the burner assembly

Key Benefits: OEM Compatibility: Engineered as a direct mechanical and electrical match for Carrier furnace parts and air handler configurations

Lennox 99M66 Heater Kit 320734-701 What is the difference betweenThe Lennox 99M66 (Model: ECB26 7CB PP) is a field installable 7. 5kW electric heater kit designed for high performance integration with CBX26UH series air handlers. Operating on a 208 240V single phase 60Hz power supply, this kit provides a nominal heat output of 25,600 BTUH at 240V, making it an essential component for supplemental or primary heating in residential and light commercial forced air systems. The assembly features an integrated circuit