Lau 02694003 Blower Wheel 326010-701 the 3/4-inch NPT threading is

the 3/4-inch NPT threading is a standard size that fits many residential and commercial heater ports

This component is built for drop-in compatibility

including Lennox 18G9101 and 18G91

this durable metal electrode is built to withstand the thermal stress of repeated ignition cycles without premature carbon fouling or ceramic cracking

Lau 02694003 Blower Wheel 326010-701 the 3/4-inch NPT threading isThe Lau 02694003 Blower Wheel, also identified as model DD11 6A, is a heavy duty, galvanized steel centrifugal fan wheel designed for high performance direct drive blower systems. This double inlet blower wheel features a 11 3 4 inch diameter and a 6 inch width, making it a critical component for residential and light commercial HVAC applications. Engineered with a 1 2 inch bore size and a convex center disc, it utilizes Preslok center disc