Product details:

Use the WHITE-RODGERS fan and limit control to regulate fan or blower operation and as a high limit safety control. Single element type is ideal for applications with narrow space limitations. Designed to be interchangeable with other flush-mounted, single element fan and limits. Dial has individual pointers for fan cut-in and cut-out settings. Removable solid copper jumper between fan and limit switches. Summer fan switch allows ventilation without changing control settings. Slotted mounting holes for easy installation.