Product Specification

Interested in an Internorm window or door for a commercial project but unsure which system is perfect for the requirements of the build? Enter your specifications from the comparable options below, and our handy tool will let you know which materials and/or profiles are best suited.

Material Type

Internorm's commercial windows and doors are available in a range of different standard and hybrid material compositions. If you already know which would best suit the requirements of your commercial project, select from the options below.

Thermal Insulation

Internorm determine a window or door's thermal insulation through comparison of its best possible U-value. A U-value, of course, is a measurement of thermal transfer through an Internorm window or door system. The lower the U-value, the more thermally efficient a profile it is.

Please select a maximum desired U-value from 0.58 to 1.2.

Sound Reduction

Internorm's windows and doors achieve industry leading standards of soundproofing. We determine the level of acoustic insulation one of our systems achieves through the average external decibel transmittance they allow.

Our commercial range's soundproofing spans from 33dB of sound transmittance through to 46dB.

HT 410 Timber Aluminium

The HT 410 is an industry leading entrance door with high-end commercial application. Manufactured from a composite blend of timber and aluminium, these composite doors and enjoyed by all end users, delivering eye-catching aesthetics.

All the while, these doors are secure, durable, weatherproof and energy efficient. With a comprehensive range of benefits and elegant visuals, it is easy to see why this Internorm door is so popular for commercial projects.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.58
  • soundproof windows
    Sound reduction (in dB)
    Up to 34
  • secure windows
    Security
    Secured by Design & PAS 24
HT 400 Timber Aluminium

The HT 400, a timber-aluminium entrance door, is one of our core commercial offerings here at Internorm. Popular thanks to a comprehensive performance, long lifespan and attention-grabbing aesthetics, the profile can be applied to nine of our door models.

Exuding luxury through the use of timber and square edges, these entrance doors deliver a reassuring standard of security for the end user, all without requiring excess upkeep.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.73
  • soundproof windows
    Sound reduction (in dB)
    Up to 33
  • secure windows
    Security
    Secured by Design & PAS 24
AT 310 Aluminium

The AT 310 is a versatile, high end aluminium entrance door with great commercial application. Available in six distinguished models, the AT 310 can suit both contemporary and heritage builds, all while performing to an exemplary standard.

Lightweight in composition and easy to install, these doors are long lasting and appealing to look at. They deliver a comprehensive performance, serving a variety of functions in all commercial projects.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.81
  • soundproof windows
    Sound reduction (in dB)
    Up to 33
  • secure windows
    Security
    Secured by Design & PAS 24
AT 200 Aluminium

The AT 200 is a sleek, contemporary aluminium entrance door. Perfect for residential projects, these versatile Internorm systems deliver eye-catching aesthetics inside and out. With an array of customisation options, the AT 200 can cater to an array of prospective end users.

Lightweight, easy to install and perfect for all commercial projects, the AT 200 delivers a well rounded and reliable performance and is distinguished through its exposed door hinges.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 1.2
  • soundproof windows
    Sound reduction (in dB)
    Up to 39
  • secure windows
    Security
    Secured by Design & PAS 24
HS 330 Lift & Slide Door Timber Aluminium

The HS 330 is a timber-aluminium lift-sliding door of the highest quality. Fantastic for an array of commercial projects and applications, these doors can be unified with our HS 410 systems, for sleek, standardized aesthetics throughout new build homes or an apartment complex.

Designed to deliver exemplary standards of thermal efficiency and durability, the HS 330 timber-aluminium lift-sliding door provides decades of effortless operation for the end user.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.62
  • soundproof windows
    Sound reduction (in dB)
    Up to 40
  • secure windows
    Security
    Secured by Design & PAS 24
KV 350 uPVC Aluminium

The KV 350 is a uPVC-aluminium window system that comes with Internorm’s modern sun protection technology. Designed with market leading integral blinds, these systems provide an array of unique benefits for a range of commercial projects and applications.

The KV 350 is largely similar to the KV 440 uPVC-aluminium system, as they both come with I-tec shading. However, the KV 350, available as both a window or door, is manufactured with a slightly slimmer profile. It delivers versatile, visually appealing aesthetics.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K):
    Uw up to 0.79
  • soundproof windows
    Sound reduction (in dB):
    38 – 44 average
  • secure windows
    Security:
    Secured by Design & PAS 24
  • concealed window locks
    Locking:
    Concealed
HV 450 Timber Aluminium

The HV 450 is a unique timber/aluminium profile, which comes with Internorm’s stunning integral sun protection hardware as standard. It retains many of the core characteristics of an Internorm profile, delivering eye catching aesthetics and offering versatile application.

With an array of benefits and an even wider range of customisation possibilities, the HV 450 is a fantastic option for all commercial projects. However, they are a particularly excellent option for larger, multi-storey complexes where sun protection is of higher priority.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.62
  • soundproof windows
    Sound reduction (in dB)
    41 - 46
  • secure windows
    Security
    Secured by Design & PAS 24
  • concealed window locks
    Locking
    Concealed
HF 410 Timber Aluminium

The HF 410 is one of the most popular and widely requested systems in our entire timber-aluminium range. Its versatility, customisation and overall performance levels make it perfect for almost any commercial application.

With an 85mm frame depth and a flush Studio profile, both residential and commercial end users can enjoy the eye-catching aesthetics of the HF 410. All the while, they enjoy fantastic thermal retention, acoustic insulation and certified security standards.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.64
  • secure windows
    Sound reduction (in dB)
    33 - 45
  • soundproof windows
    Security
    Secured by Design & PAS 24
  • concealed window locks
    Locking
    Concealed
HF 400 Timber Aluminium

The HF 400 is a timber-aluminium system that provides a well rounded performance and fantastic aesthetics. Slim in design with just a 75mm construction depth, the profile can serve a multitude of purposes with an array of commercial and residential application.

Fitted with two I-tec innovations and customisable to tastes, the elegant HF 400 system is a core part of our timber-aluminium product range.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.70
  • soundproof windows
    Sound reduction (in dB)
    35 - 45
  • secure windows
    Security
    Secured by Design & PAS 24
  • concealed window locks
    Locking
    Concealed
HF 310 Timber Aluminium

The HF 310 is a high quality, timber-aluminium composite profile that blends versatility with an all round performance. Taking the finest visual benefits of timber and supporting them with the thermally efficient and weatherproof properties of aluminium, these windows provide the best of both worlds.

Serving a wide array of commercial applications, these flush sash windows (or doors) are always well received and enjoyed by end users for decades after the project is complete.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.62
  • secure windows
    Sound reduction (in dB)
    33 - 46
  • soundproof windows
    Security
    Secured by Design & PAS 24
  • concealed window locks
    Locking
    Concealed
KF 320 uPVC

The KF 320 uPVC system is a sleek, flush fitting profile designed in our Studio style. Capable of being manufactured into a range of window and door variants, the KF 320 is the perfect solution for a wide range of commercial applications.

With a slim 71mm frame depth and advanced features, the KF 320 delivers a great all-round performance for a flush fitting uPVC window. The design of the KF 320 can also be applied to an aluminium clad uPVC profile.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.65
  • secure windows
    Sound reduction (in dB)
    35 - 45
  • soundproof windows
    Security
    Secured by Design & PAS 24
  • concealed window locks
    Locking
    Concealed
KF 410 uPVC

The KF 410 is a contemporary, versatile uPVC profile compatible as both a window and a door. With a square edged design that complements our Home Pure style, this system is visually appealing for all end users and is fantastic for a multitude of commercial projects.

As with our uPVC-aluminium clad KF 410 variant, the uPVC KF 410 comes with a range of I-tec innovations, and performs to an exemplary standard. Compared with the standard uPVC window on the market, Internorm’s stands head and shoulders above the competition.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.62
  • secure windows
    Sound reduction (in dB)
    34 - 45
  • soundproof windows
    Security
    Secured by Design & PAS 24
  • concealed window locks
    Locking
    Concealed
KF 310 uPVC

The KF 310 is one of the core offerings of Internorm’s commercial product range. A slim uPVC window and door profile with a 71mm construction depth, these high performance systems deliver sleek aesthetics for a variety of different applications.

Also available with an aluminium clad uPVC upgrade, the KF 310 is thermally retentive and secure, while also coming with a rounded edge design and a range of customisation.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.69
  • soundproof windows
    Sound reduction (in dB)
    33 - 45
  • secure windows
    Security
    Secured by Design & PAS 24
  • concealed window locks
    Locking
    Concealed
KS 430 Lift-Slide Door uPVC Aluminium

Lift-slide doors are an innovation in external door design. Our KS 430 system is a uPVC-aluminium variant of this door. They are perfect for both high-end new build housing and apartment complex projects. These doors have fantastic residential application for end users.

Effortless to operate and sleek in design, the KS 430 lift-slide door delivers the standards of thermal efficiency and security you’d expect with an Internorm system.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K):
    Uw up to 0.64
  • soundproof windows
    Sound reduction (in dB):
    up to 43
  • secure windows
    Security:
    Secured by Design & PAS 24
  • concealed window locks
    Locking:
    Cylinder on both sides
KV 440 uPVC Aluminium

The KV 440 is a uPVC-aluminium window with high functioning, integrated internal blinds. Providing quadruple protection from solar glare, our I-tec Shading systems come in Venetian or Duette variants, catering to different commercial applications when fitted to the KV 440.

Our market leading integral blinds enhance the thermal performance of the windows and aids sound reduction.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K):
    Uw up to 0.64
  • soundproof windows
    Sound reduction (in dB):
    39 – 45 average
  • secure windows
    Security:
    Secured by Design & PAS 24
  • concealed window locks
    Locking:
    Concealed
KF 320 uPVC Aluminium

The KF320 uPVC-aluminium system is a unique, stunning window delivering versatile commercial application. All styles of housing and building can benefit from the sleek, frameless glass design that sets these windows apart from the rest of the Internorm KF range.

With a slim, 74mm construction depth and full customisation, these windows are sure to be eye-catching and visually appealing for the end user whilst delivering the same exemplary standards of thermal retention and security.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K):
    Uw up to 0.65
  • soundproof windows
    Sound reduction (in dB):
    35 – 45 average
  • secure windows
    Security:
    Secured by Design & PAS 24
  • concealed window locks
    Locking:
    Concealed
KF 310 uPVC Aluminium

The KF 310 is part of our uPVC-aluminium window and door range here at Internorm. The KF 310 has fantastic commercial application, delivering sleek, versatile aesthetics while performing to a leading standard.

Coming with a multi chambered frame and discrete, secure hardware, the KF 310 is a leading system among our uPVC and uPVC-aluminium systems here at Internorm.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K):
    Uw up to 0.62
  • soundproof windows
    Sound reduction (in dB):
    34 - 45
  • secure windows
    Security:
    Secured by Design & PAS 24
  • concealed window locks
    Locking:
    Concealed
KF 410 uPVC Aluminium

The KF 410 is part of our core window and door range. Available in a uPVC-aluminium clad profile, the KF 410 provides sleek aesthetics with its 93mm construction depth. All the while, it delivers the comprehensive performance levels you come to expect with an Internorm system.

These windows have stunning commercial application, compatible with any high-end project you may be overseeing. End users can benefit from a range of optional upgrades, including Internorm’s own high specification innovations.

Profile Options

  • U-value icon
    Thermal insulation (in W/m²K):
    Uw up to 0.62
  • soundproof windows
    Sound reduction (in dB):
    34 – 45 average
  • secure windows
    Security:
    Secured by Design & PAS 24
  • concealed window locks
    Locking:
    Concealed