With its bright aesthetic appearance, endless applications and environmental credentials, stainless steel is a popular choice for high-quality architectural finishes.

First defined in 1911, ‘stainless steel’ is the generic name for a range of corrosion and oxidation resistant iron alloys. Various grades are now used for every imaginable application- including extensively in building and construction.

An estimated 92% of the stainless steel used in architecture, building and construction is recaptured and recycled at the end of service according to the International Stainless Steel Forum, so it’s the natural choice for architects working towards BREEAM and LEED.

Common grades in architecture

Often listed in architectural specifications as simply, ‘stainless steel’ it is important to understand the differences between the various types and specify the correct grade of stainless steel for the application and environment.

The grades most frequently used in construction are 430, 304 and 316, also referred to as grades 1.4016, 1.4301 and 1.4401 according to BS EN 10088. Type 304 includes nickel which improves its resistance to corrosion, whilst Type 316 includes molybdenum to further improve its resistance, making it suitable for external or extreme environments.

Introducing INTRAgrille

Offering a stunning architectural finish for both interior and exterior applications, the INTRAgrille range of linear grilles are available in both types 304 and 316 stainless steel, as well carbon steel with a zinc/aluminium coating.

From walkways, trench covers and soffits to drainage, ventilation and even ceilings, INTRAgrille offers a unique design solution for endless architectural applications, allowing you to design comprehensively in any plane.

Advanced production techniques ensure a precise slot and the highest parameters in terms of flatness and straightness for a seamless finish.

You can choose the direction of profiles and adjust support profile spacing and slot gaps to achieve the exact degree of masking and load bearing you require.

Grilles can also be cut and shaped to nearly any format and finished in several ways to suit your application. The only limit is your imagination.

To experience the real power of INTRAgrille for yourself, request a sample today.


INTRAsystems is committed to the sustainable operation and development of our business and we are constantly seeking better ways to control and minimise the impact we have on our environment.

  • Manufactured in the UK

  • 100% recycled aluminium

  • Regenerated nylon yarns


EPDs: What are they and how do I use them?

Understanding Environmental Product Declarations (EPDs) is fast becoming critical for sustainable procurement in the built environment. In this blog we give you a comprehensive overview…


RIBA Announces Change to CPD Requirements

Following changes to RIBA CPD requirements, we explain the updates and how INTRAsystems can help with Entrance Matting CPD.

INTRAsystems products on NBS Source

INTRA launches new specification writing service

Save time and confusion with INTRA’s new NBS Chorus spec-writing service and get your

NBS Source
wood effect entrance matting

Bamboo vs Aluminium: The look you want with the performance you need

INTRAform DM Low Profile offers a wood-like, bamboo aesthetic finish with the functional and environmental benefits of recycled aluminium

Product Update
Entrance Matting EPD

INTRAsystems announces publication of a range of EPD Certificates

Architects and specifiers looking for entrance matting products with EPDs can head straight to INTRAsystems for a full range of 9 Cradle to Grave EPD verified products


INTRAsystems is moving office

INTRAsystems is moving to new manufacturing premises in 2023! As of 3 January 2023, our new address is:
6 Cobham Rd, Wimborne, Dorset, BH21 7PE

Company News

INTRA launches next-generation recycled PVC entrance matting

INTRAsystems has broken ground again with the launch of a brand-new modular entrance matting product. INTRAlink2

NEW Product Launch

INTRA launches NEW fibre insert range

INTRAshape entrance matting installation at AberInnovation is shortlisted in the CFJ Awards, ‘Flooring in education – colleges/universities’

NEW Product Launch