Lexington Hearth Grist Mill 24" Weathered Gray Extension sqft1808 When you turn the control BTU NG 23 When you turn the control knob to the “ON” position and push the control knob in Infratech’s Home Management Panel interfaces with a Third Party System Requires a 0 10V DC Input Signal Infinite Heat Control Use Any Switch Programmed through Third Party System Timer Programmed through Third Party System Remote Dimming Programmed through Third Party System Zoning Capabilities Programmed through Third Party System Smart Phone Tablet Application Programmed through Third Party System NEMA Rating NEMA 4 Panel Wiring Diagrams Provided Tested Before It Leaves The Factory Assigned a UL Listing Number Panel Built Job Specific Overall Dimensions 20" H x 16" W x 7" D Interior measurements 20" H x 14" W x 6" D Each relay has a max capacity of 9 If an exact replacement is no longer available LEXINGTON HEARTH MANTELS are warranted against manufacturer defects and workmanship for a period of one (1) year from the date of purchase