The Blue Sea Systems AC Isolation Cover provides electrical insulation for exposed panel backs and mechanical protection for panel backs protruding into lockers. The lightweight material is easily drilled for wire entrance and exit. Meets ABYC requirements for panels with combined AC and DC. Used on Blue Sea Systems toggle style circuit breaker panels only. Works with:• Blue Sea Systems 8086 AC 3 Sources + 12 Positions/DC Main + 19 Positions (Overton's #1087780)• Blue Sea Systems 8186 AC 2 Sources + 12 Positions/DC Main + 19 Positions (European)• Blue Sea Systems 4309 WeatherDeck 12V DC Switch Panel 8 Positions (Overton's #1087615)Blue Sea Systems No. 4031 Easily drilled for wire entrance and exit Meets ABYC requirements Use on Blue Sea toggle style breaker panels only | AC Isolation Cover, 10 Positions 2 Columns