Primarily for all air over heat applications duct heaters, furnaces, auxiliary inserts in heat pumps, etc. Standard kits come with attached 10-32 x 1-3/4 in screws, terminal insulators, nuts and washers for installation. Only the DH500 is packaged with a 300 deg F in-line fuse link. Standard diameter 3/8 in coils fit most older applications as well as many newer applications.

h&h Electric Heat Service Coil Kit, 277 V, 4000 W, 53 to 175 in L