This unit features an 11 7/8" diameter and an 8 1/8" width

which is the standard configuration for most International Environmental fan coil blowers

Designed with 5/8" ODF sweat connections

and FUS01348 across numerous 2TFB and 4TFB air handler models

When the original wheel becomes clogged or brittle

Lennox 51K30 Key 323269-701 This unit features an 11The Lennox 51K30 is a high grade Gib head key designed for precision mechanical bonding within commercial HVAC systems. Engineered from C1018 keystock, this non tapered component is essential for securing blower wheels and drive assemblies, ensuring torque is transmitted efficiently without slipping. With an Overall Length (OAL) of 1. 500 inches and cross sectional dimensions of . 374 x 1. 00 inches, this direct OEM replacement offers the exact