Put a battery switch or ACR directly into a 360 breaker panel Blue Sea Systems 360 panels are the most versatile in the industry. Their modular design makes customization and modification easy. This M-Series blank fits into this open architecture design and provides space to install any M-Series component such as a battery switch, Automatic Charge Relay (ACR), low voltage disconnect (LVD). Key Features Compatible with 360 electrical panels Provides mounting surface in panel for M-Series components including battery switches, ACR, and LVD Lifetime warranty Specifications Dimensions: 4 3/4 "H x 4 7/8"W Approvals: SAE J1171, UL 1500