20mm Diameter Cutout 25mm Diameter Cutout See also different: LC8811 Power Transfer Device A larger version of the LC8810 LC8810 Power Transfer Device Same prep in frame as the EA280. WS7 Hingebolts Common on Security projects, we provide a cutout in the door frame with fixing tabs and a mortar box, where Chubb WS7 Hingebolts are specified. To purchase WS7 hinge bolts head to Aluform Interior Supplies.