What is the typical aisle between a desk and a wall with a bookcase?

When a bookcase is positioned on the wall opposite a desk, allow a minimum 44–48 in. of clear floor space between the back of the desk chair and the front of the bookcase to allow safe, convenient access to bookcase shelves without having to move the chair. This accounts for chair depth (20–24 in.) plus a 24 in. access zone. OfficeFurniture2go.com helps plan proper desk-to-bookcase clearances — call 1-800-460-0858.