Actuator, Air Connection Size 3/16 in, Application HVAC Air Handling Systems, Diaphragm Material Neoprene, Effective Diaphragm Area 8 sq in, Housing Material CRS with Zinc and Dichromate, Manufacturer Series MCP-8031, Mounting Style Bare Delrin Bushing; Clevis, Operating Temperature - Maximum 180 Degrees F, Operating Temperature - Minimum -20 Degrees F