HF 310

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.

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

Profile Options

hf 310 timber aluminium windows
hf 310 timber aluminium windows and doors
hf 310 timber aluminium commercial windows
hf 310 timber aluminium window and door prices
I-Tec Glazing Logo Latest
PAS 24 windows
Secured by Design windows

Technical Specifications

Dimension (in mm)

  • Frame construction depth 85
  • View width frame/sash 114
  • View width flying mullion (2 sashes) 134
  • View width transom/mullion (2 sashes) 173
Opening versions

  • Fixed
  • Turn and turn/tilt
  • Tilt
  • Sliding window
  • Lockable doors
  • Sliding doors
  • Doors with threshold
  • Outward opening doors

  • Quantity 3
  • Colour Black

Profile Features

Versatile Application

The HF 310 timber-aluminium profile is among the most versatile system within this product range. They can be applied to fix, tilting and sliding windows, as well as lockable or sliding doors, with or without a threshold.

Triple Gaskets

Three gaskets are fitted around the perimeter of the HF 310 system. Doing so ensures complete protection from the elements for the end user. In weather conditions where one, or even two gasket window and doors would fail, the Internorm range powers through.

Flush Profile

Complementing the sleek design of the timber-aluminium composite profile, the HF 310 system is fully flush in design. Flush fitting profiles are fast become an in-demand option for end users, and can visually enhance any style of property.

All Around Gluing

The I-tec Glazing fitted to the HF 310 is held in place by unique all around gluing. Doing so improves durability and structural integrity, making these timber-aluminium systems harder to damage, as well as more thermally efficient.


A variety of options are available with the HF 310 system, including square edged handles, lockable handles and a security led Secustik handle upgrade. We have something for every commercial project and need.

Internorm Handles


Internorm’s I-tec Glazing is fitted to the HF 310 timber aluminium system as standard. Depending on the requirements of the commercial project, this glazing can be toughened or frosted, as well as a range of other upgrades.

Internorm Glazing


Cater to an array of end users thanks to colour customisation of the HF 310 timber-aluminium system. We have a wide range of colour finishes and authentic timber woodgrains. Whatever the commercial project, the HF 310 can accommodate.

Internorm Colour Range