Maxi Shackle - Security for Concrete Block Walls, Gates, etc

The Pragmasis Maxi Shackle is a security anchor intended for awkward situations, such as blockwork walls, gate posts and several other places where an anchor is needed but a concrete floor anchor is not an option.

The Maxi Shackle is a halfway house between a normal ground anchor and the Block Wall fitting option for our Torc ground anchor. It provides a larger, more spread out, fitting area in comparison with a conventional anchor, but not as large as the special 8-bolt fixing Block Wall option for the Torc ground anchor. The Torc anchor is more expensive, but it can offer a much higher security level and Sold Secure approval. If you are concerned about security level or insurance approval, the Torc ground anchor may be a better option albeit at a higher price.

The Maxi Shackle is available with a choice of fitting kits:

• Concrete Block Wall using 4 shield anchors (otherwise known as expanding bolts, similar to that shown to the right, here), M8 size;
• Chemical resin capsules, M8 size, for fitting to items that are too large or too awkward to drill right through and where the shield anchors would not be suitable (e.g. large wooden gate posts). Note that the resin capsules are not suitable for bases/substrates that have voids/air gaps, such as most block or brick walls etc.

Caution: The Maxi Shackle will not be as secure as a conventional ground anchor, such as our Torc anchor, fitted to a good concrete floor. The Maxi Shackle is aimed at those situations where a concrete floor is not available or not appropriate/convenient.

The Maxi Shackle is commonly used in conjunction with a chain & lock for securing bicycles and horse tack to the wall in a garage, for securing field gates for horse owners (preventing the gate being lifted off its posts without needing it to be welded in place), and for many other awkward security requirements.

Maxi Shackle Features:

• Ideal for securing low-medium value bicycles and landscaping/gardening equipment
• Ideal for equestrian applications - Combat the growing threat of horse theft and tack theft!
• Designed for easy DIY installation
• Uses a wide fitting to cover a large area of the wall/post/etc
• Hardened steel and riveted construction
• Difficult and noisy to attack - Deters thieves
• Plenty of room for a chain: The opening measures more than 50mm x 50mm (the sloping sides are a minimum of 50mm apart, widening to beyond 80mm) (Beware that the Maxi Shackle will likely be the weak point when it is paired with a 13mm+ chain. If you need to use a high-security chain, you should consider using the Torc ground anchor to provide a good fixing for it)
• British design and manufacture - Support British industry!
• Fitting kit includes all parts required
• About 30 minutes to fit - Easy-to-follow and thoroughly illustrated instructions are included.

Below are some example arrangements of bicycles etc secured with the Maxi Shackle:

This is a typical Maxi Shackle installation in a domestic garage, here securing two bicycles with a single Protector 13mm chain and Squire SS50CS padlock.

Here is a Maxi Shackle fitted to a metal gate post to prevent the gate being lifted off its hinges, whilst allowing the gate to be opened and removed when required. This is shown with a Protector 13mm chain and Squire ASWL2 warehouse/block padlock. Note that the chain is deliberately entwined around the gate to prevent a thief from releasing it by just cutting a single bar of the gate.

This is the rear view of the Maxi Shackle fitment with steel allthread studs. This fitting kit uses security shear nuts on both ends of the studs. Once fitted, shear nuts expose only a smooth conical surface so there is nothing that a thief can easily undo. (The black items are vinyl caps that cover the end of the studs, to avoid injury.)

A Maxi Shackle fitted using chemical resin capsules and high tensile bolts to avoid drilling right through a large wooden post surrounded by a spikey hedge! Again, this is shown with a Protector 13mm chain and Squire padlock, entwined around the gate to prevent a thief from releasing it by just cutting a single bar of the gate.

The Maxi Shackle allthread fitting can be adapted to secure other objects, such as a contractor's site box, as shown here. In this case, the inside of the site box is protected by its lockable lid, so conventional high tensile bolts (not supplied in the allthread kit) have been used coming through from the inside, in place of the normal lengths of studding. Shear nuts are used on the outside, only, here. The site box is chained with a 16mm chain to a ground anchor on the floor (not visible in this photo). This allows the site box to be moved simply by unlocking the chain.