9631 Dark Brown. The KICKSTOP 9631 London Door Bar is a door frame reinforcing bar with a 'D' shaped staple to fit over the staple (keep) of a surface fitted rim lock or cylinder night latch. This effective steel anti-burglary device is screwed onto the internal face of the lock side of the frame and will resist kicking, splitting and forcing open of the door. The 9631 version is designed for extra large staple sizes of 40mm x 105mm (or less).. Extra large D shaped staple. To reinforce wooden door frames fitted with a surface mounted rim lock or nightlatch. Staple size 40mm x 105mm. 5mm thick steel bar with rounded edge & countersunk holes