Trellidor Fixed Security

Security Barrier Range for Windows.


  • Fixed burglar proofing for windows in several styles including Trellidor Fixed burglar bars; Trellidor Burglar Guards in three designs; and Trellidor Polycarbonate Bars
  • Choice of model takes into account personal preference, risk profile and budget
  • Custom made to protect windows, open balconies, glass walls, glassed-in staircases and other openings
  • Can be manufactured for wide range of window sizes from large to very small
  • Engineered with strengthening features to resist attack
  • Corrosion and UV resistant even at the coast
  • Carry warranties against defective workmanship, materials and corrosion

Product Overview

Burglar bars to suit your style and your pocket

Trellidor offers customers three different styles of fixed burglar proofing for windows so that customers are able to choose a range to suit their home or office and their budget. Trellidor Fixed Security galvanised steel burglar bars match our Trellidor Retractable security gate for a seamless look. Trellidor Burglar Guard electro-galvanised steel burglar bars in three different designs are our more budget-friendly options. Trellidor Polycarbonate Bars are ideal for those looking for transparent security that will keep out monkeys and baboons as well as robbers.

Trellidor Products

Other window protection products available from Trellidor:

Options and Attributes

One of the most noticeable differences between Trellidor security barriers and other products on the market is the shape of our profiles. We use a unique roll-forming process on all steel components used to make our barriers.

All Trellidor's steel components are roll-formed into u-channel profiles with reinforced edges rolled back 180°.


  • Superb corrosion resistance as we're able to coat all surfaces. Our competitors use square tubing, which is difficult to coat inside, resulting in the product being vulnerable to corrosion from the inside out
  • Increased flexibility and strength

Trellidor Retractable security gates are hung from the top track and the security gate wheels fit inside this track. This ensures the barrier operates smoothly with low friction, reducing the need for maintenance. The wheel holders are made from glass-filled Nylon 6/6 which, because of its strength and resistance to corrosion is used for engine parts in the motor industry. Every upright on our security gates contains a wheel holder to evenly distribute the weight of the gate, increasing strength and reducing wear and tear.

Trellidor's specially designed rivets help provide optimum strength in our security gates and window grilles. Many competitors opt for normal 'off-the-shelf' blind rivets which have a low tensile strength, allowing the barrier's components to be pulled apart relatively easily. Our rivets avoid this weakness and help to improve the strength of our protective barriers.


  • Stronger than standard blind rivets commonly used in our industry.
  • Improves the strength of our units.

The bottom track is an area commonly targeted for attempted break-ins. Trellidor has designed a unique track along with sill guides to help combat this potential attack point.

Our bottom track features a low profile aluminium 'T' track designed to meet international standards.


  • Increases strength & resistance to the uprights being pulled off the track.
  • Self-cleaning as it prevents the accumulation of dirt.
  • Scuff resistant.
  • Ease of operation
  • Reduces chance of tripping.
  • Helps prevent corrosion.

The sash of a trellis door or security gate is made up of the upright bars, the links that cross over these bars, and the rivets that join them all together. Trellidor Retractable trellis gates are strengthened using double uprights (front and back) with links that cross over and connect three upright bars (competitors usually join only two uprights together). Our trellis doors operate smoothly and stack neatly to the side as a result of these features.


  • The system increases the strength of the unit
  • It ensures that the unit does not snag curtains
  • It provides for a neater stack with no exposed edges

Every component making up a security barrier including security gate screws must add to its ability to resist an attack by an intruder. Trellidor uses unique screws that can only be fitted or removed with a custom-made drive socket to help reduce the risk of break-ins. Our security gate screws are also longer than usual to provide extra pull-out resistance for our security gates and burglar bars.

Our fixings are of a unique design that can only be fitted or removed with a custom-made drive socket. This increased tamper resistance minimises break-ins.

The shoulder slides are purpose designed nylon components that joins the trellis to the framework of Trellidor security barriers. The shoulder slides fit snugly into the framework channel, which ensures smooth operation and enhances the overall security and integrity of the barrier.

Shoulder slides manufactured from Nylon 6/6 material.


  • Helps provides maximum strength
  • Ensures smooth & silent operation
  • Enhances corrosion resistance
  • Highly durable

Fully framed security barriers and gates are able to resist attack better than semi-framed or unframed gates. Trellidor Retractable security gates are fully framed, with the four corners interconnected. This means that the gate is not dependent on the fixings only when an intruder is trying to lever it out. Anchor and strike jambs positioned over the bottom track add to the gate’s strength because they connect the bottom track to the sides of the barrier.

Corner cleats join the top track to the anchor and strike jambs. This provides increased strength as it connects the top track to the sides of the security barrier.

International Certification

The Trellidor Trojan II - T1000 security gate was developed for extremely high risk security situations and commercial applications. It has been certified to Level 2 by the London-based LPCB (Loss Prevention Certification Board). The Trellidor Plus - T900 model has been certified by the same testing body to Level 1. The LPCB is widely acknowledged as a leading international certification and approvals body in the fire protection and security industries.

Product Range Differentiators:

Component Trellidor Trojan II - T1000 Trellidor Plus - T900 T800 T700 T500
Standard top track
Steel top track with cover
Stainless steel inserts inside uprights and links
Steel Rivets
Semi-tubular stainless steel rivets 6 5
Upright wheel holder - customised with steel bearings
Upright wheel holder assembly - nylon wheel holder with aluminium shaft
Roll-formed u-channel profiles
Upright sill guide - steel guide with semi-tublar rivets
Upright sill guide - steel guide with zinc plated spacer tube and steel rivets
Upright sill guide - nylon sill guide with zinc plated space tube and steel rivets
Link closures - joined together with steel spacer tubes and recess bushes
Link closures - joined together with nylon hinge pins
Anchor Plates - reinforced anchor plates at fixings into the wall
Lattice link assembly 2 hole
Certified through LPCB Level 2 Level 1
Download Product Brochure :
* Optional Feature

Flexible Colour Range

  • White
  • Matt
  • Sand
  • Light
  • Matt
  • Matt
  • Matt

Trellidor Retractable security gates come in 2 standard (White & Matt Bronze) and 5 non-standard colours (Sand, Light Brown, Matt Aluminium, Matt Charcoal and Matt Black). Special colours are available on request, allowing you to choose a colour to best suit your decor or your corporate colours.

All Trellidor products are finished in a state-of-the-art powder coating plant. As such the colours on this webpage will have a 5% to 10% variation from the actual product colour. This is due to the difference in the way light reflects off paper, steel and aluminum.

Should you have any concerns or would like to see the actual powder coated colour, please speak to your Trellidor consultant who will be able to provide you with a physical sample.

Corrosion Resistant Coating

The Trellidor powder coating system includes a pre-treatment process that enhances our products’ corrosion and UV resistance. The powder coating is ideal for coastal and inland conditions and increases the lifespan of the barrier by retaining its quality finish.

All Trellidor products are finished in a state-of-the-art powder coating plant. The above colours will vary with the finished product.


Find Out More