Field Controls Control Kit For 24V Gas Boiler Or Water Heater CK-41FDesigned for use with the SWG Series Power Venter for controlling Natural Gas or L.P. Gas appliances. Made in the USA.Includes:Junction box with mounted pressure switch and post purge timerFan control gas pressure switch2 ft. length of 1/4 aluminum tubing2 Flexible conduit connectorsGSK-3 Spillage switch1/4 tubing connector Product Specifications BRANDField Controls LENGTH INCHES13 WIDTH INCHES6 HEIGHT INCHES7 WEIGHT LBS4 FUEL TYPENatural and LP Gas FOR USE WITHGas Appliances INCLUDESDraft Proving & Secondary Safety Switches LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERCK-41F