What is the difference between the 150 and 150S-HD

The rugged one-piece molded beige housing is engineered for durability on the job site

For technicians performing an HVAC blower motor replacement

The high-tensile synthetic fiber cords are specially treated to resist elongation

This 2-way normally open valve features a high-performance cast bronze body with durable brass trim

Siemens Building Technology GMA126.1U Actuator Els PW 29614 What is the difference betweenThe Siemens Building Technology GMA126. 1U Actuator is a professional grade, 2 position spring return air damper actuator engineered for precise control in critical HVACR systems. Operating on a 24V AC DC power supply, this OpenAir GMA Series unit delivers a robust 62 lb in torque (7 Nm), making it an ideal choice for managing return air, mixed air, and exhaust dampers. Designed for fail safe operation, the bi directional spring return ensures the