How to Check If a Vehicle Has Pending Loan Before Buying Vahan Info Autopa RetractaPost Galvanised Retractable Bollard External Lock 745mm x 90mm. At some sites, it is impractical to haul around bollards and posts once they are removed, and it is also not ideal to leave them lying over in a fold down format. For these instances, the RetractaPost is the ideal solution. This post is commonly seen in vehicle sales forecourts, commercial premises car parks, domestic driveways, and private properties. When the bollard is in the down position, it is covered by a small cover. Once in the raised position, the bollard stands at 745mm tall above ground level. The post has a convenient grab handle on the top for ease of lifting. There are several heights of RetractaPost to choose from including 500mm, 745mm and 900mm. Each post is also available in different diameters. An option with an integral lock is available to purchase for those that require it. Please note: Lock is not included; you will need to supply your own.