Field Controls Control Kit With Adjustable Post Purge & With Draft Control For Gas CK-43The CK-43 is designed for use with the SWG Series Power Venter for controlling Natural Gas and L.P. Gas Draft Induced appliances. Control kits control the operation of SWG Power Venters. Control Kits can also control the operation of Field Draft Inducers and Combustion Air Systems. Made in the USA.Includes:Junction box with mounted pressure switch and relay/timer1 ft. length of 1/4 aluminum tubing1/4 tubing connectorFlexible conduit connectorBarometric Draft Control Product Specifications BRANDField Controls LENGTH INCHES13 WIDTH INCHES6 HEIGHT INCHES7 WEIGHT LBS4 FUEL TYPENatural and LP Gas FOR USE WITHDraft Induced Appliances INCLUDESDraft Proving Switch, Adjustable Electronic Post Purge LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBERCK-43