Polymer Roller Grilles - Knightguard™ Economy Roller Grilles

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Polymer roller grilles are a type of roller shutter, which provide a functional physical barrier with light transmission maximum air flow, ventillation & visibility. They're ideal for maximising limited space - by rolling up and out of the way they provide an unobstructed passage way when open. We brand these as Knightguard Economy roller grilles, but also refer to them as "the Budget Barrier".

Knightguard Economy roller grilles combine an aluminium structure and a curtain consisting of horizonal aluminium rods interconnected with polymer "H" connectors. These "Nylon 6" polymer "H" links offer characteristics of good strength, wear resistance, abrasion resistance, and good resiliency.

These roller grilles are a high performing product suitable for a range of installations including commercial window fronts; shopping centres; servery counters in restaurants, bars, pubs; cellars, hotels, kitchens, kiosks, cafes and many other applications.

The compact roll size means Knightguard Security roller grille will take up less space and be suitable for smaller openings or restricted head room than comparable roller grille products.

Knightguard Security roller grille roller shutters are easy to use and operate with both manual and a variety of electric control options available.

Advanced Shutter Industries has been a manufacturer of roller shutters and roller grilles since 1976 and continues to offer some of the best products available in Australia today.

Knightguard commercial roller shutters and roller grilles are manufactured in our Belmore factory in Sydney NSW Australia for supply & installation and are available to be supplied to city & country areas in Brisbane QLD, Melbourne VIC, Hobart TAS, Adelaide SA, Perth WA, Darwin NT, Canberra ACT, and are also available for export outside of Australia.

Ring us on (02) 9718 9988 today!

Who is better placed to advise you on your roller shutter project than the manufacturer?
We have been manufacturing roller shutters since 1976.

For no-obligation expert advice for your application, give us a ring or email us.

Benefits of Knightguard™ Economy Roller Grilles

Knightguard Economy roller grilles have a number of benefits which include:

  • Protection from unwanted intruders - increase the security of your business and provide a visible deterrent to would-be intruders
  • Protection with maximum airflow - provide security while allowing full ventillation and air flow through the roller grille even when closed
  • Protection with total visibility - provide protection with total visibility through the roller shutter even when closed.

Controls and Operation

Knightguard Economy roller grilles are simple to use and operate with a variety of manual and electric motor controlled lifting mechanisms available, giving you full control over your environment.

The operation, opening and closing, locking and unlocking is customised to your needs so you choose how and where you want to open and close your roller shutter or roller grille, whether it is from the inside, outside, both inside and outside, via keylock, hasp and staple, electric key lock or radio remote control.

"Electric" - Motorised Roller Shutter Lifting Mechanism

The most convenient way to open and close roller shutters is to opt for the electric motor option. A range of electric tubular motors and accessories are available from Advanced Shutter Industries for roller shutters which includes:

  • 240V mains powered tubular electric motors for roller shutters operated by hand-held radio remote control;
  • 240V mains powered tubular electric motors for roller shutters operated by a wall switch or keyed wall switch;
  • Group controls to simultaneously operate a number of electric roller shutters with a single switch;
  • Wind and rain sensors and timers to automatically open or close your electric roller shutters;
  • Back-up power for 240V mains powered electric roller shutters via Uninterruptible Power Supply (UPS), so in a power outage you can still open or close your roller shutters;
  • Free-wheeling safety clutch to avoid roller shutter damage if an obstruction is encountered while closing the roller shutter; and
  • Manual Override mechanisms as a safeguard to allow manual opening and closing of your roller shutters in case of a power outage.

Electric tubular motors for roller shutters are suitable for all roller shutter sizes all the way up to 250kg in weight.

"Manual" - Spring Assist Lifting Mechanism

Roller shutters fitted with an assist spring as the lifting mechanism allow the roller shutter curtain to be physically raised and lowered by hand.

The assist spring balances the weight of the roller shutter curtain and makes lifting and lowering the roller shutter easier and safer.

Note: Never raise a spring assisted roller shutter or roller grille in an uncontrolled fashion - always use the hook to gently push the curtain up when opening.

Spring assist lifting mechanisms are suitable for roller shutters & roller grilles starting from 1.0 m wide.

For commercial roller shutters & roller grilles wider than 2.7 m we highly recommend fitting a second assist spring to avoid axle torsion and ensure even lifting.

If the curtain weight exceeds 60 kg or is wider than 3.0 m we recommend using electric motors instead of the assist spring.

Colours and Finish


The interconnecting "Nylon 6" polymer "H" links which make up the Knightguard Economy roller grille curtain are available in black colour only.

Guides and Rails

All visible aluminium components on Knightguard Economy Roller Grilles are available in clear anodised matt finish.

Optional powder coating of aluminium components to specified colour and anti graffiti coating are available as extras if required.

Clear Anodised (standard)

Others (optional)


Installation Options

Knightguard Economy Roller Grilles are suitable for the following types of installation:

  • Face fit or reveal fit;
  • Bulkhead, bracket or pelmet box fit (up to size limits);
  • Inwards or outwards facing roller shutter roll.

Technical Specifications


Knightguard Heavy Duty Shuttergrille roller shutter curtain consists of the following interconnected components:

  • 65 mm x 1.6 mm thick extruded aluminium "plate" slats; and
  • 31 mm x 16 mm tough extruded aluminium connecting slats.

Nylon end caps ensure the slats are locked into place, reduce friction and facilitate smooth operation.

Optional punching of aluminium "plate" slats on all or part of the curtain with cut-outs of 180 mm wide x 55 mm high is available. Space between punch-outs is 50 mm apart unless specified otherwise.

Curtain Weight

8.05 kg / sqm

Add 1.5 kg / m for each mid rail or bottom rail.

Maximum Width


For width beyond roller shutter maximum specifications use multiple roller shutters within maximum width with fixed or removable mullions if appropriate.

Maximum Height


Slide Guides

Choice of roller shutter guides:

  • 76 mm x 32 mm clear anodised guides (suitable for face-fit or when optional pelmet box is fitted); or
  • 54 mm x 32 mm clear anodised guides available for use without pelmet box.

Bottom Rail

85 mm x 17 mm clear anodised Mid Rail is available as an optional extra to provide added strength or to house waist-height keylock.


70 mm diameter octagonal galvanized steel axle fitted with 130 mm diameter adaptor rings.

Roll Diameters for Bracket or Bulkhead Installation

  • Note: Dimensions are a guide only.
  • Incorporation of a midrail increases the roll diameter.
  • "A": Axel displacement suggested for distance of axle from wall or ceiling.
  • "D": Roll diameter.
  • "DLH": Daylight height of opening.
"DLH" "A" "D"
1200 mm 130 mm 220 mm
1800 mm 140 mm 240 mm
2400 mm 150 mm 260 mm
3000 mm 160 mm 280 mm
3300 mm 170 mm 290 mm

Pelmet Box Fit Sizes

  • Note: Dimensions are a guide only.
  • Incorporation of a midrail increases the roll diameter.
  • "B": Pelmet box height and depth.
  • "OAH": Overall height of roller shutter from top of pelmet box to bottom of curtain travel (e.g. to ground or counter).
"OAH" "B"
1200 mm 250 mm
2500 mm 300 mm


240V Electric Motors

Choice of 240V tubular electric motors for roller shutters:

  • Electric 240V motor; or
  • Electric 240V motor with manual override; or
  • Electric 240V motor with built-in radio remote receiver and paired radio remote control.

240V Electric Motor Accesories

A range of 240V electric motor accessories are available as optional extras:

  • Heavy duty key switch (in wall or on wall fitting) suitable for indoors and outdoors;
  • Electric 240V motor with built-in radio receiver and paired radio remote control;
  • Radio remote control plus keyring transmitter for standard 240V electric motors;
  • Group controls for operating multiple roller shutters;
  • Timers;
  • Wind and rain sensors;
  • Free-wheeling safety clutch that avoids damage to the roller shutter if an obstruction is encountered under the roller shutter while being lowered.

Counter-balance Assist Springs

A range of counter-balance assist springs and accessories:

  • Single Assist Spring;
  • Double Assist Spring;
  • Hook;
  • Keylock;
  • Extra Blank Keys.


A range of miscellaneous parts, accessories and services:

  • Removable 180° clear anodised mullion with lockable shoot & pad bolt;
  • Mid rail (85 mm x 17 mm) clear anodised for curtain;
  • Pelmet boxes of various sizes;
  • Fixed or removable panels matching the roller shutter curtain and guides. Ideal when in-fill panels are required;
  • Powder coating of all or some of the roller shutter parts;
  • Installation and delivery. Both can be arranged if required.

Due to continual product development the inclusions, features, colours and technical specifications of Advanced Shutter Industries products may change without notice.

Manufacturing window roller shutters & roller grilles in Sydney since 1976.