Blue Sea 4027 AC Isolation Cover - 5-1/4 x 7-1/2x3 [4027]4027 AC Isolation Cover 5 1 4 x 7 1 2x3 Features: Provides electrical insulation for exposed panel backs Provides mechanical protection for panel backs protruding into lockers Lightweight material is easily drilled for wire entrance and exit Meets ABYC requirements for panels with combined AC and DC Covers a panel, or other object, 7 1 2" long x 5 1 4" wide, x 3" deep WARNING: This product can expose you to chemicals including di(2