Casing for air-conditioning unit has frame with seal and cover, undercut, spring, thrust bar, and recess

摘要

The square frame (1) of the casing is sealed so as to be airtight by a cover (3) which has an undercut (4) holding a spring element (11) pre-tensioned towards the frame, and has a thrust-bar (5) on which rest a seal (16) and at least one cover. The side of the covers facing away from the outside have a recess (18) the depth of which corresponds to the thickness of the bar and seal together.