the selectable timing is controlled by physical DIP switches

Utilizing the differential expansion principle

Helps restore proper airflow

By maintaining the oil at a temperature higher than the coldest part of the system

Rugged Construction: Features an all-steel case and cover to protect internal bellows and switch components from mechanical damage

Lennox 56W70 Blower Housing R-410A the selectable timing is controlledThe Lennox 56W70 Blower Housing is a heavy duty, direct fit replacement for the discontinued R45557 003. Engineered for high efficiency air handlers and gas fireplaces, this HVAC blower assembly is designed to support the internal centrifugal fan motor and ensure precise static pressure management. As a genuine OEM Lennox part, the 56W70 eliminates the vibration and alignment issues common with universal aftermarket housings. Its rigid, corrosion