09/01/07 11.B.1. Each client's bedroom must have direct access to a corridor, without requiring one to pass through a bathroom or another client's room.
09/01/07 11.B.4. Bedroom windows must have a minimum window glass area equal to 1/10 of the available floor space. The windows must be openable and be equipped with functioning window shades or their equivalent, except in air conditioned buildings, or if a bedroom is below grade level, one (1) window in each room must be operable and usable as a second means of escape by the client(s) occupying the room.
09/01/07 11.B.5. Bedroom windows must be grade level on a vertical plane, located on an exterior wall, and have an unobstructed view.
10- 144 C.M.R. ch. 118, § 11.B