The White Rodgers 1F51N-619 is a mechanical, non-programmable thermostat designed for simple cool-only applications. Ideal for evaporative coolers and other single-stage systems, this thermostat provides reliable performance with a user-friendly dial and no need for digital programming.Specifications:

• Application: Cool only (0 Heat / 1 Cool)
• Voltage: 24V
• Mounting Orientation: Horizontal
• User Interface: Mechanical dial
• Temperature Range: 55°F to 95°F
• System Switch Positions: Off, Cool, Vent
• Fan Switch Positions: High, Low
• Terminals: R, W, Y, G (compatible with model 21D28-6)
• Mercury-Free: Yes

Features:

• Snap-action switch ensures consistent operation
• Easy-to-use dial for manual temperature adjustments
• Separate system and fan control switches
• Durable, mercury-free design for safety and compliance

Perfect for utility spaces, rental units, and environments where straightforward cooling control is essential.Available now at Beenimax – your trusted HVAC parts supplier.