Square D I-LinePower Distribution Panelboards is ideal for service entrance equipment or downstream distribution panels in the electrical system and is used to feed NQ and NF lighting and appliance panelboards. The I-Line power distribution panelboard is the most versatile on the market and feature Schneider Electric's unique breaker engagement system which allows 15 A branch circuit breaker next to or across from a 1200 A circuit breaker. I-Linepanelboards are capable of feeding large motor loads and are UL Listed for use on systems with up to 200K max. These panelboards can come with a main breaker or main lug configuration and 4001200A main lugs only and 1001200A main circuit breakers. This door kit is used with HCM I-line distrubution panelboard and is surface mounted. The door kit has a height of 43.6 in and a width of 17.170 in and has 4 piece per set. This product is certified to cULus & CE standards.