Mounting hole pattern, From 5" to 6" square.6 3/4" square seat plate.Mounting slots in corner.
Install bolts from 5" to 6" hole pattern. Square plate gas releaser has a 6 3/4" footprint.
Does not tilt or rock.
Watch a Video How to Remove the Gas CylinderMechanism Install TipsMechanism Install PlacementMechanism Retrofitting & AdaptingMechanism Pivot Pin LocationEasy adapt to your chair-Mounting board