the McDonnell & Miller 339500 is the exact part number for the SA21-6 valve assembly

Featuring a 48-inch vapor-filled capillary tube and SPST switching

Key Benefits: Universal Compatibility: Engineered for use with all common refrigerants and both mineral and POE oils

Direct OEM Replacement: Ensures 100% compatibility with specific Broan HRV models and NuTone ERV units without manual wiring modifications

ensuring seamless compatibility and a modernized ignition process

Fasco 35-386 Resilient Base 322838-754 the McDonnell & Miller 339500The Fasco 35 386 Resilient Base is a critical mounting component designed specifically for 3. 3 inch diameter motors, providing a stable 3. 5 inch shaft height (center line). Built for industrial and commercial HVAC applications, this cradle motor mount utilizes a 3. 86 inch ring to ring dimension to ensure precise alignment within the blower housing. The resilient base design is engineered to isolate operational vibrations, significantly reducing