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K25 Perforated Aluminium Roller Shutters

Modern design and maximum transparency for a bright and open space Download
L20 Spec.

The K25 Perforated offers a lighter alternative to our standard K25 aluminum security shutter. Utilizing a single-wall extruded aluminum slat with a multitude of micro-perforations, it gives a semi-transparent look to the shutter curtain.

Similar to all K25 aluminum roller shutters, the K25 Peforated combines lightweight construction with robust strength. Operating quietly and needing minimal maintenance, this compact roller shutter is ideal for medium-security applications, including homes, reception desks, bars, and offices.

K25 Perforated roller shutters technical specification

Technical Specification K25 Perforated roller shutter

Extruded aluminium roller shutters with micro-perforations


  • Shutter curtain manufactured from single wall extruded aluminium lath profile with dimensions of individual slats of 40mm high x 8.7mm thick. Lath to have micro-perforations throughout for light and airflow.
  • Extruded aluminium guides with an integral box section for reinforcement and to facilitate fixing. Guiderails have high density 5mm pile brush seals for quiet and smooth operation. Guiderail dimensions as follows: 60mm wide x 24mm deep.
Lath options

Additional ventilation / light slots between the lath is available as an extra.

Shutter box

Roll formed aluminium in two sections; top and bottom boxes. Bottom box removable for installation and maintenance and chamfered at 45°. The shutter box is assembled on steel endplates.


Manual push up/pull down operation; or electric operation by integral tubular motor with manual override facility. Safety brake fitted when required to comply with BS EN 13241:2003-1 (HVP Security Shutters' general policy is to fit a safety brake unless specified otherwise).

Locking Options:

Bottom rail central key lock or guide pin locks. Electrically operated shutters are generally self-locking.


Polyester Powder Coated White or Dark Brown as standard; A full range of RAL colours is available as an extra.

Maximum Sizes:

4000mmW x 5000mmH
(recommended max. 9m2 electric operation or 6m2 manual operation)

Box sizes:
Clear opening height (to underside of box) Box size
1535mm 165mm
1820mm 180mm
2595mm 205mm
3750mm 250mm

Contact HVP at 01392 270218 for shutter weights or any other questions you may have. We'll be happy to assist.

Technical drawings K25 Perforated roller shutters

Below are technical drawings of face fixed and reveal fixed roller shutter arrangements. Hover over the images for more detail.

General arrangement

Technical drawing of a K25 aluminium roller shutter with detailed sizes. General arrangement diagram K25 Aluminium roller shutter

Face fixed arrangement

Technical drawing of a K25 aluminium roller shutter face fix. Diagram of a face fixed K25 Aluminium roller shutter

Reveal fixed arrangement

Technical drawing of a K25 aluminium roller shutter reveal fix. Diagram of a reveal fixed K25 Aluminium roller shutter

Description K25 Perforated roller grilles

The K25 Perforated Aluminium Roller Shutter is a versatile and popular choice, offering a wide range of applications for internal use or external use behind glass.

Like all K25 roller shutters, they operate quietly and roll up into a compact box. This feature is particularly advantageous in spaces with limited headroom, providing a practical solution without sacrificing style.

Multitude of microperforations

Designed for various security needs, the K25 Perforated stands out with its single-wall aluminum lath featuring numerous small micro-perforations.

These perforations not only allow for the passage of air and light but also provide a unique visual element. In daylight and from a distance, the curtain appears solid, but when lit from one side, it takes on a semi-transparent appearance.

A balance of security and aesthetics

Whether used in storefront situations where visibility is essential or in spaces requiring a balance between security and aesthetics, the K25 Perforated offers a reliable solution.

Its adaptability, coupled with the durability of aluminium construction, makes it suitable for medium-risk security situations, providing both peace of mind and a modern aesthetic.

K25 Perforated roller shutter suitability

The K25 Perforated roller shutter is an exceptionally versatile solution, perfectly suited for a diverse range of applications, including but not limited to:

  • Office spaces
  • Reception counters
  • Shopping malls
  • Hotels and resorts
  • Restaurants and cafes
  • Daycare centers
  • Hospitals and healthcare facilities
  • Computer server rooms
  • Retail shops and boutiques
  • Educational institutions (Schools, Colleges, Universities)
  • Art galleries and exhibition spaces
  • Automotive showrooms
  • Industrial facilities
  • Financial institutions
  • Entertainment venues
  • Residential garages
  • Public libraries
  • Sporting facilities
  • Community centers
  • Public transportation hubs
  • Research laboratories
  • Government buildings
  • Pharmacies
  • Technology and innovation centers

Downloads K25 Perforated Roller Grilles

Below you'll find downloads for our K25 Perforated aluminium roller shutters.

Please contact us for further information such as roller grille weights, available colours, technical advice or project specific drawings. We'll be happy to help with any further information you require.

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