The Concertina Diamond Barriers are perfect for providing security and safety for both public and private use. From construction sites, public areas and the leisure industries, for permanent fixtures and temporary solutions such as maintenance and cleaning operations. Manufactured from a Aluminium alloy these extending barriers are lightweight and have natural corrosion resistance. Please see the New Instant Gate range for quick deliveries.

concertina diamond pattern barriers

These unique and innovative safety barriers are made from aluminium alloy and have an attractive, retractable design and can be quickly installed and operated.

concertina aluminium alloy barrier
A lightweight and strong design, complemented by safety locks on the wheels and mechanical locks, reducing chances of movement when they are positioned as stationary.

concertina barrier safety wheel locks
All safety barriers are fully tested, to maximise quality and safety which is a top priority. The Concertina Diamond Barriers consist of  many safety features; produced in high visibility yellow with high visibility reflectors for safety at night.

Mechanical bracing locks the safety barriers when they are extended.

concertina barrier braces

For  a very wide range of applications and areas, this easy to extend and install safety barrier system, offers many advantages over a fixed safety barrier system.

extendable steel barrier system

Safety Barrier Specifications

  • 1.3 m height x 2.1 max extendable width
  • 1.8m m height x 2.1 max extendable width
  • 1.8m height x 4m max extendable width
  • Tough and Durable
  • Produced in high visibility yellow
  • Safety locks/brakes on the wheels
  • Hi-visibility reflectors for safety at night.
  • Indoor and Outdoor Barriers
  • All barriers fully tested
  • Easy to install

Instant Gate Red and White

instantgate A

Our expanding barrier designed to quickly and easily control pedestrian and vehicle traffic, even in large volumes!

  • Weight: 28kg
  • Dimensions: 440 x 550 x 1380mm. Extends from 440 to 2190mm long
  • Two heights 1380 (4 foot) and 1884 (6 foot 2 Inches) mm
  • Quick to situate in position and move around, but also easy to lock in place
  • Brake to secure one end in place
  • Lightweight, yet strong and rigid
  • Wheels allow for simple portability
  • Simple to use catch, to lock in position and attach multiple barriers together for wider openings
  • Designed for high visibility

instantgate closed

instantgate open

Available in two models

Model  Closed Dimensions mm 
 IG4  440 x540 x 1380 High
 IG6  450 x 542 x 1884 High


Instant Gate, a new quick-to-deploy crowd barrier that's robust and easy to extend to any length. Ideal for crowd control or pedestrian/logistics management in a wide range of situations. Use indoors or outside and extend to any length by adding additional units. The 4ft high Instant Gate deploys in seconds to cordon off restricted areas. Easy to move and expand single-handedly. Robust braked wheels allow for easy movement and placement. Unique latching system secures the barrier in a closed position when not in use, and can be used to extend to any length using additional modules. Highly visible red and white markings are powder-coated and weatherproof.
Made from lightweight, ultra-strong aluminium. Can be fitted with standard scaffold clamps to fix to scaffolding or turn corners.

Trellis Barriers

trellis barriers red and white

Trellis Barriers are strong expanding barriers that can be quickly and easily deployed to highlight no access areas.

Strong, stable all steel construction.
Quick and easy deployment.
Reflective Red warning strips.
Chain hooks incorporated.
Two versions Light and Heavy Duty


Forecourts, closing off lifts, access ways and exits and entrances, hazardous areas etc.


FLEXI-LIGHT Barrier - Light duty model

  • Height: 1,000 mm
  • Trellis bars: 25 mm x 4 mm
  • Extended width: 3.6 metres
  • Foot depth: 500 mm
  • Finish: Red/white dip painted Red reflective strips
  • Weight: 12kg

FLEXI-BARRIER - Heavy duty model

  • Height: 1,000 mm
  • Trellis bars: 40 mm x 5 mm
  • Extended width: 4.0 metres
  • Foot depth: 500 mm
  • Finish: Red/white dip painted Red reflective strips
  • Weight: 19kg

trellis barriers red and white closed

For the latest price and lead times please contact Merlin Industrial Products Ltd