A rigid support for mounting telecommunications terminating hardware, blocks, cross-connect components and wiring May also be used to attach and support entrance and distribution cables, splice cases, etc Typically 3/4 in plywood anchored/fastened to existing wall It is recommended that the plywood be fire-retardant, or be coated with a fire-retardant substance
a board used to support the back of someone or something a raised vertical board with basket attached; used to play basketball; "he banked the shot off the backboard