Mounting Panel for Toggle Type Magnetic Circuit Breakers. Mounts A-Series Double Pole Toggle Circuit Breakers. Slate gray matches standard panel color. Mounts A-Series double pole toggle circuit breaker. 1/8" aluminum 5052 alloy. Accepts Blue Sea Systems label. "Power On" and "Reverse Polarity" LEDs. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.