BOSTWICK TYPE
Vertical bar folding gates are constructed of pairs of vertical channels with two or more rows of lattice bars. Channels may be 3/4″ x 3/8″ x 1/8″ approximately 6″ on centers with 5/8″ x 1/8″ lattice bars, with separators at pivot points. Overhead tracks and hangers should be supplied for gates in wide corridors or wherever they extend more than 8 or 10 feet Floor tracks or bottom stiffening tracks may be used where gates are of sufficient relative height to allow tracks to fold into position. Casters are usually required for gates over 3 or 4 feet wide, unless overhead tracks are used.
WALL POCKET TYPE
Shallow or deep wall pocket cabinets where wall conditions permit. Deep pocket cabinets may be used allowing full unobstructed use of corridor, with folding gates pulling out, or collapsing into cabinets on straight line. Door to cabinet mounted on recess or piano hinge, with cabinet or cylinder locks. Where other wall conditions permit, shallow pocket cabinets may be used, also allowing full unobstructed use of corridors with folding gates hinged to swing out and across corridor opening, or collapsed to fold into pocket of cabinet. Door to cabinet mounted on offset hinges and provided with cylinder locks.
LAZY TONG TYPE
Diamond lattice folding gates are constructed of single channels riveted back to back and arranged in diamond pattern. Channels may be 3/4″ x 3/8″ x 1/8″ approximately 6″ on centers. The overall height becomes less as the gates are extended; approximately 1/2″ to each foot of width. The pivot point is usually placed near the bottom to maintain a more constant distance to the floor. Vertical members may be provided on wide gates with casters on floor or track and hangers above.