Recommended for moderate traffic, medium weight, interior, single-acting doors. Multi-function unit is shipped as a stop and can be converted to hold-open or friction in the field (5012PKG adapter kit included). Non-handed. Slide track design. Durable slider cam and shock block. 3/4" square channel. Complete screw packet with thru-bolts for door, wood and machine screws for frame. Door Opening Size (in inches) for Model Number 10-246: Butts/Offset Pivots: 24-1/16" - 30" Center Hung Pivots: 26-9/16" - 32"