The Union 1209 Rim Latch features a latchbolt operated by knobs on both sides. It includes an inside snib that keeps the latch secured when engaged. Specifications are as follows: 76mm backset (follower), 102mm width, 70mm height, and 17mm depth. The bolt throw measures 11mm, with a lip depth of 16mm. It uses an 8mm spindle and offers reversible lock functionality for versatile installation.