BOOSTER ELEMENT, 2 1/2" SQ FLANGE, [ 480V 4000W 1PH ] [ 1-3/4"OC BOLT HOLES~ 11-1/2"L INSIDE ] [TERMINALS {SCREW } , [2 1/2" SQ GASKET # 32-1166 INCLUDED ] HATCO BOOSTER COMPACT (4 & 24KW~ 12KW 3PH ONLY, HEAVY DUTY (12KW 3PH ONLY), IMPERIAL & POWERMITE (24KW~ 12KW 3PH ONLY). Hatco 02-04-40402-04-404-0002.04.40402.04.404.00R02-04-404R02-04-404-00R02.04.404R02.04.404.00 Hatco 02-04-40402-04-404-0002.04.40402.04.404.00R02-04-404R02-04-404-00R02.04.404R02.04.404.00 Hatco 02-04-40402-04-404-0002.04.40402.04.404.00R02-04-404R02-04-404-00R02.04.404R02.04.404.00