Patent ID: 8297001

Claim:
A wall assembly comprising: at least two columnar members; a holding member bridged between said columnar members so as to hold an AV device; and a front cover plate for covering front sides of said columnar members; and a rear cover plate for covering rear sides of said columnar members; a first gap between said front cover plate and said holding member and a second gap between said rear cover plate and said holding member; wherein at least one of said front cover plate and said rear cover plate is attached to the holding member in a manner permitting opening and closing or attachment and detachment; wherein said holding member has a plate member whose horizontal side portions are connected to said columnar members, a rectangular opening which is formed in the plate member and into which the AV device is to be fitted, and clamping members provided in an upper side portion and a lower side portion of said opening and configured to clamp the AV device from up and down directions.