Locks Into the Floor or Ceiling For 3/8" to 3/4" (10 to 19 mm) Glass Lock is at 47-1/4" (1200mm) from the Floor 1-3/8" (35 mm) Diameter Tubing 316 Grade Stainless Steel CG Hardware Locking Ladder Pulls have a fully concealed deadbolt locking mechanism. A turn key and thumbturn are located at a comfortable height above the finished floor. These Locking Ladder Pulls are intended for use with glass doors made from 3/8" to 3/4" (10 to 19 mm) thick tempered glass. They lock into the floor or ceiling, and are available in brushed stainless steel and black matte finishes. This Locking Ladder Pull is supplied with our standard cylinder. If staying with the 7-pin format, just remove the core, have it re-keyed, or replace it with a new one. A selection of 7-pin Cores are available. If proprietary 6-pin Cylinders are required, simply remove the entire Rim Cylinder provided and replace with the proper Rim Cylinder of your choice. This Ladder Pull will accept most standard manufactured Rim type cylinders. NOTE: Glass fabrication is required.