Insertable housing

An insertable housing for electrical and electronic instruments for insertion in racks and cabinets of a modular system which is standarized at least with respect to its height units, comprising:

• a component carrier having two side walls connected by upper and lower front supports and upper and lower back supports, said component carrier having an open upper side, an open underside, and a rear wall;
• a jacket enclosing said component carrier and having a housing top and a housing bottom which are connected to said two side walls of said component carrier, said jacket including a frontal frame adjacent an end of said component carrier to form an entrance to said component container;
• said frontal frame having a frontal air intake opening;
• said housing bottom being spaced predetermined distance below said lower front rail and said lower back rail to define an air intake shaft;
• said housing top being spaced a predetermined distance above said upper front rail and said upper back rail to define an air discharge shaft;
• said housing top, said housing bottom, and said sidewalls of said jacket extending rearwardly beyond said rear wall of said component carrier to form an enclosure which is in communication with said air discharge shaft;
• said rear housing wall of said jacket having an air discharge opening;
• and
• fan means situated only at said rear housing wall of said jacket for exhausting air from said enclosure through said air discharge opening;
• whereby air is caused to flow in sequence from said frontal air intake opening in said frontal frame through said air intake shaft, through said component carrier in a horizontal direction, through said air discharge shaft, into said enclosure, and out of said jacket through said air discharge opening.