Abstract: Apparatus for mounting T-shaped sections of a guide rail network of an elevator system within a hoistway. Spaced apart horizontal brackets are attached to a wall of the hoistway and the base of a guide rail section is seated against two spaced apart brackets. Threaded fasteners are mounted in each bracket on either side of the base and a quick acting connector is threaded onto each fastener. Each connector includes a locking arm that can be moved over the base of the rail section and brought into contact therewith as it is rotated about the fastener. A lever arm is attached to each locking arm which provides sufficient mechanical advantage to force the rail section into locking contact with the brackets.