Trellidor Retractable Grilles

Trellidor Collapsible Window and Door Grilles

Trellidor collapsible steel security grilles provide a highly effective solution for access control, ideal for windows, doors, passages, stairwells, kiosks, and other openings. For over three decades, we have supplied various customers with a wide range of bespoke grille designs tailored to meet their evolving security needs.

We work closely with clients to ensure their security solutions address the latest threats, supported by fast, hands-on post-sales service to maintain ongoing protection and peace of mind.

Enhance the Security of Your Commercial and Residential Spaces

Sliding security gates are robust, metal gates that slide open and closed along a track. They provide a highly visible layer of protection against intruders for homes, businesses, and industrial properties. They are commonly used for doors, windows, storefronts, and entryways, offering both security and convenience.

Sliding security gates play a crucial role in safeguarding people and property. When professionally installed in an opening, a closed and locked sliding security gate effectively blocks unauthorised access into the building through that opening.

Well-made sliding security gates are easy to use, long-lasting and cost-effective. They are strong under attack and an excellent deterrent to criminals. Trellidor retractable security gates have been best-sellers for decades because we do not compromise on the strength of our security barriers.

Trellidor sliding security gates are made from a tough, double-trellis construction. Each gate is fitted with a unique, tamper-proof lock. Every Trellidor expanding steel or aluminium gate is made-to-measure for a perfect fit in doorways, windows, passages, patios, hatches and most other openings.

Trellidor Premium Retractable Gates have been our top selling range since Trellidor first developed the design over 40 years ago. What has changed over the years is the strengthening features we've added as new technology has become available. What we've retained are all the features our customers love: the robust double trellis design, smooth operation, easy but strong locking system, strength under attack and optional extras such as lift-up tracks.

*suitable for doors and windows

Product Features

Powder coated galvanized steel and aluminum trellis-style security gates

Custom made to fit your door, window or other openings

Engineered with strengthening features to resist attack

Neat, compact sash designed for strength and smooth operation

Corrosion and UV resistant at the coast

Several models to choose from according to risk profile and budget

High end models internationally certified for strength under attack

Fitted with patented Trellidor locking systems

Carry warranties against defective workmanship, materials, and corrosion

Special options such as curved units are available


International Certification

We have two products that have been certified by the London-based LPCB (Loss Prevention Certification Board), the Trellidor Trojan II – T1000 which is certified to Level 2 standard and the Trellidor Plus – T900 has been certified to Level 1 by the same testing body. The LPCB is widely acknowledged as a leading international certification and approvals body in the fire protection and security industries.

Options & Attributes

Dead-lock System:

This is a unique patented locking system designed specifically for retractable Trellidor T700, T800, Trellidor Plus – T900 & Trellidor Trojan II – T1000 security barriers.

This patented draw-bolt lock has a single keyhole with multiple locking points in the lock-stile.

Benefits:

You only need one key to lock or unlock the security gate, saving time when under stress in an emergency 

The multiple locking points provide maximum protection against attempted break-ins

Multiple locking points make it difficult for criminals to know where to attack


Profiles:

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°.

Benefits:

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


Top Track &Wheels:

Retractable Gates 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.

Rivets:

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.

Benefits:

Stronger than standard blind rivets commonly used in our industry

Improves the strength of our units

Track & Sill:

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

Benefits:

Increases strength & resistance to the uprights being pulled off the track

Self-cleaning as it prevents the accumulation of dirt

Scuff resistance

Ease of operation

Reduces chance of tripping

Helps prevent corrosion


This is a unique patented slam lock system designed specifically for retractable Trellidor security barriers and incorporates the dead-lock technology. This locking system is optional on most Trellidor models.

The Trellidor slam lock has three modes of operation (unique to Trellidor). You choose which mode of operation to use when it suits you.

Sash:

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.

Benefits:

Ste 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

Fixings:

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.

Shoulder Slides:

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.

Benefits:

Helps provides maximum strength

Ensures smooth & silent operation

Enhances corrosion resistance

Highly durable


Fully-Framed Barriers:

Fully framed security barriers and gates are able to resist attack better than semi-framed or unframed gates. Retractable Gates 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.

Where can Security Gates be used?

Security gates can be used in various settings to enhance safety and security. Here are some common locations where security gates are often installed:

Residential Properties:

Security gates are frequently used in residential settings, including single-family homes, townhouses, and apartments. They can be installed at the entrance of the property, passages, hatches, windows or specific areas like patio enclosures.

Commercial Buildings:

Security gates are utilised in commercial establishments such as office buildings, retail stores, warehouses, and factories. They can secure entrances, and restricted areas to prevent unauthorised access and protect valuable assets.

Educational Institutions:

Schools, colleges, and universities often implement security gates to control access to the campus. They are installed at main entrances, or specific buildings to ensure the safety of students, staff, and facilities.

Healthcare Institutions:

Hospitals, clinics, and medical centers employ security gates to regulate entry into sensitive areas like emergency departments or operating rooms. They contribute to patient privacy, staff safety, and protection of medical equipment.

Retail Shops, Complexes, Stores, and Shopping Malls:

Shopping malls, retail complexes, and stores often use security gates to secure storefronts and protect merchandise. They help deter theft, prevent after-hours break-ins, and maintain a secure shopping environment.

REASONS TO CHOOSE TRELLIDOR

COMMERCIAL & RESIDENTIAL SECURITY GRILLES

LEADING SERVICE LEVELS

We are dedicated to building strong, lasting partnerships with our customers. By carefully listening to your requirements,

we deliver tailored solutions, respond proactively to potential security threats, and leverage survey data

to continuously innovate and enhance our offerings.

Ownership

As a leading provider of premium security solutions, Trellidor takes full ownership of every stage in the design and manufacture of each installation. Our expert team is dedicated to delivering tailored solutions that provide lasting protection and complete peace of mind for our customers.


After-Sales Service

We believe exceptional customer care is key to long-term success. That's why we provide comprehensive after-sales support to customers nationwide. Our expert team is always available to address your concerns, provide guidance, and ensure you remain fully satisfied with your security solution.

Nationwide Installation

Our team of skilled professionals delivers expert installation of security barriers across Ireland, ensuring every project meets the highest standards of quality and reliability. From security gates and burglar bars to roller shutters, we provide tailored solutions designed to protect and enhance your home or business.

Vendor of the Year

Dedication to delivering premium security solutions and outstanding customer service has earned Trellidor UK national recognition when they were proudly nominated as "Vendor of the Year" by a major UK retailer at the Annual Fraud Awards 2021. This honor reflects ongoing commitment to providing industry-leading security and exceptional service to our customers.

Working Around Your Trading Hours

At Nolantrelli, we understand the importance of keeping your business running smoothly. That's why we offer flexible installation schedules designed to minimise disruption. Our team works around your trading hours, ensuring your operations continue seamlessly while we carry out your security installation.

TRELLIDOR QUALITY

Manufacturing Quality Standards

Trellidor (Pty) Ltd adheres to the highest international quality standards and is fully ISO compliant. We are proud to be ISO 9001:2015 certified for Quality Management Systems (QMS), audited and accredited by the London-based Loss Prevention Certification Board.

Difference Between Slam Lock and Dead Lock Security Gates

Traditional Trellidor sliding security gates are fitted with either a deadlock or a slamlock, depending on the model and customer preference.

THE DIFFERENCE BETWEEN THEM IS:

  • DeadlockA sliding security gate fitted with a dead lock gate requires a key to lock it when the trellis gate is closed. These locks were invented by Jeremiah Chubb in England in the 1800's. The Chubb company is known for its safes and locks. Well-made dead locks are usually strong and robust when attacked.
  • Slamlock A sliding security gate fitted with a slam lock gate automatically locks when you slam the trellis gate shut. The concept originated with the Yale lock, invented in the late 1800's in America. It is a convenient locking system but is not always the strongest type of burglar gate lock when attacked.

Both lock types engage several locking points within the lock stile for added security and strength under attack. Our computer-cut keys add another layer of protection. Each key has a unique code to help prevent unauthorised duplication of keys.


CERTIFICATIONS

BRE-LPCB Approved to Loss Prevention Standard 1175

Physical security barriers play a critical role in safeguarding the occupants of both residential and commercial buildings. To be effective, they must withstand and deter potential threats with proven reliability. The most trusted way to ensure this dependability is through rigorous independent testing and certification — which is why our solutions are LPCB approved to Loss Prevention Standard 1175.

WATCH THIS VIDEO ON TRELLIDOR PRODUCTION TO BRE-LPCB TESTING

RETRACTABLE GRILLE RANGE

TRELLIDOR T700

The Trellidor T700 Retractable has been used to protect households and commercial premises around the world for over 45 years.
  • Fully framed, galvanised steel grille
  • Retractable or fixed configuration options
  • Custom-made for doors, windows, stairways, and retail outlet openings
  • Neat, compact installation
  • It is top hung, so glides effortlessly when opened or closed
  • Multiple locking points operated by the single turn of a key

TRELLIDOR PLUS - T900

The Trellidor Plus - T900 collapsible security grille is suitable for commercial and light industrial applications such as healthcare facilities, retail outlets, and businesses that have high value goods to protect.
  • Certified to BRE Standard LPS 1175, rated at LPCB Level 1
  • Fully framed, galvanised steel grille
  • Models include single, double, flexi and side-by-side collapsible doors and fixed units
  • It is top hung, so glides effortlessly when opened or closed
  • Multiple locking points operated by the single turn of a key

TRELLIDOR T950i

The Trellidor T950i security grille has been designed to protect higher risk applications such as commercial and retail properties.
  • Fully framed and manufactured from a combination of galvanised mild steel and extruded aluminium
  • Available in single, double, and flexi retractable doors and fixed units
  • Strong and resilient, with built-in shrouds to protect the locking points
  • Additional sets of flights across the uprights
  • Extended top track cover
  • Multiple locking points operated by the single turn of a key
  • It is top hung, so glides effortlessly when opened or closed

TRELLIDOR TROJAN II T1000

The Trellidor Trojan II – T1000 has been developed for situations where certified security grilles are a prerequisite. They assist with crowd control in sports stadia and public transport facilities and protect commercial and industrial entities against criminal activity.
  • Certified to BRE Standard LPS 1175: Issue 5, rated at LPCB Level 2
  • Models include single, double, flexi and side-by-side collapsible formats, fixed designs and an Emergency Escape locking option
  • Additional strengthening features including a lock cover with cylinder shroud and a steel lock stile cover plate
  • It is certified to 3000mm in height
  • Multiple locking points operated by the single turn of a key
  • It is top hung, so glides effortlessly when opened or closed

TRELLIDOR TROJAN III EMESC T3000

This is one of the strongest sliding grille doors in the world, designed to protect crucial infrastructure from attack and theft. It include a keyless locking system so that the grille can be unlocked quickly and easily without the need for a key in an emergency. It is suitable for crowd control and to prevent unauthorised access to sensitive facilities such as transport hubs such as overland and underground railway stations, sports stadia, key points at risk of terrorist attacks, shopping centres, arms storage facilities, international embassies and consulates, government buildings.
  • Certified to BRE Standard LPS 1175: Issue 7, rated at LPCB lever 3, the highest certification received by a sliding security grille in the world
  • Configurations include single door, double door, side-by-side, and flexi sash options
  • Certified to a height of 3630mm with unlimited width using multi sash and dual channel technology
  • Emergency escape locking system designed for quick release, keyless opening in critical situations
  • Manufactured from highly specialised spring steel
  • Weighs 50kg/m² due to reinforcing but easy to operate due to its unique construction
  • The bottom track is sunk into the ground for security and to prevent tripping
  • Sill guides have bearings to make it easier to move
  • Surpasses international crowd loading and building regulation safety standards
  • Stacks neatly to the side when opened

PHOTO GALLERY