Mounting enclosure for key telephone unit circuit sections

摘要: A front extrusion having a generally U-shape provides top and bottom walls for the enclosure with wall extending therebetween. Integral extruded flanges are formed on outer surfaces of fastener channels inner near ends thereof as well at junction wall. Circuit board grooves shaped rear-cover groove is internally free end each walls. rear cover which may be plate or inserted laterally in trapped therein by left right side plates complete enclosure. Each has hole pattern aligned body extrusion. If utilized additional holes such to align The alternately planar member finned heat sink surface thereon receive high power dissipation key telephone unit circuit section components.