Spec Sheet Preview: The N87_ surface housings are designed to be used with the Alpha Communications® / Golmar™ Nexa modular series door entry stations and system annunciators. There are five (5) configurations available in single and double-width varieties. For larger configurations, multiple N87_ series housings may be mounted alongside each other. The N87_ surface housings are finish in a Natural Anodized Aluminum finish, and all have a built-in rainhood. See chart below for reference of sizes/types and configurations available.