HPS, FG4, Finger Guard Kit, Fused, Series: Imperator®, 1.8 in H x 6.2 in W x 3.05 in D Size, For Use With: MBMH, MGJ, MLI 250 VA, AJ, AR, MQMJ, QR, SP, PP 750 VA and All 350, 500 VA Encapsulated and Commercial Potted Industrial Control Transformer, Plastic, Clear,