Rectangular Backshells and Connector specifications Accessories No where in the world, under one roof, does anyone manufacture and supply such a complete selection of commercial and military rectangular connection accessories: from simple wire bundle strain reliefs, backshells, dummy stowage receptacles and industrial protective covers, to advanced electromagnetic shielding and termination systems, shorting caps, and cable sealing backshells; Glenair rectangular backshells provide total enclosure of the mated plug and receptacle connector for optimum electromagnetic interference (EMI) shielding. Three cable entry locations are offered: a straight "top" entry and two 90 degree "end" and "side" entries to satisfy most installation requirements. Glenair's split backshell design provides easy assembly and convenient access for ongoing connector service and maintenance. All standard materials and finishes are available including composite thermoplastic. Glenair produces literally hundreds of thousands of different designs to meet every application need including virtually every Mil-Spec accessory ever documented.