HT 410

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.

  • U-value icon
    Thermal insulation (in W/m²K)
    Uw up to 0.58
  • soundproof windows
    Sound reduction (in dB)
    Up to 34
  • secure windows
    Secured by Design & PAS 24
HT410 Timber Aluminium Window
PAS 24 windows
Secured by Design windows

Technical Specifications

Profile Features

121mm Construction Depth

The HT 410 is best distinguished by its deep, 121mm frame depth. With this, it achieves among the best U-values of any Internorm system, while equally delivering multi accredited standards of security for the end user.

Flush Design

To complement the aesthetics of the timber-aluminium profile, the HT 410 entrance door is manufactured in our fully flush Studio design. Flush profiles are hugely in-demand for commercial and residential end users.

Thermal Foam

The HT 410 entrance door is engineered with a wide core filled with Internorm’s insulating foam. Natural warmth is trapped inside, improving energy efficiency and lowering the carbon footprint of the end user.

Concealed Hardware

To maintain the sleek aesthetics of the flush profile, our market leading, durable hardware is discreetly installed to timber-aluminium system. In doing so, our hinges and locks do not obstruct the visual appeal of the HT 410.


Specifiers can choose from a range of handle options when having the HT 410 timber-aluminium door supplied. All easy to operate for the end user, we have security upgrades for applicable commercial projects.

Internorm Handles


With the HT 410, you can specify from a range of glazing upgrades, depending on the requirements of the projects. This includes special glazing options and toughened panes, for increased security.

Internorm Glazing


Internorm’s colour portfolio includes a wide range of woodgrains, brighter shades and subtle hues. We have an array of options for the HT 410 system, all of which are long lasting and fully weatherproof.

Internorm Colour Range