Frequently Asked Questions

The unique AG210 window and door profile has been developed and is exclusively manufactured by Met Therm Windows. We offer a complete service from design and manufacture through to installation.

The AG210 profile has been designed to sympathetically recreate double-glazed versions of original steel windows and doors. Handcrafted manufacture, welded corners and slim thermally broken frames retain traditional detailing while providing modern energy efficiency, security and comfort.

Yes. AG210 windows are designed as an ideal replacement for traditional steel casement windows, including W20, W30, W40, W50 and SMW-style windows. They recreate slim steel-style sightlines while offering modern thermal performance and double glazing.

Yes. The AG210 range is designed to recreate the look and feel of original steel windows. Options include slim frames, welded corners, traditional hinges, peg stays, leaded panes and cottage-pane designs.

Yes. AG210 metal windows are A+10 rated and use thermally broken frames with 24mm double glazing. This helps reduce heat loss while retaining the slim, traditional appearance of classic metal windows.

A thermally broken frame contains a continuous thermal barrier between the internal and external sections of the frame. This helps reduce conductive heat loss through the metal and improves the overall energy performance of the window.

AG210 windows have been independently assessed by the British Fenestration Rating Council for their energy efficiency and have achieved an A+10 rating. The rating considers factors including heat loss, solar gain and air leakage.

Yes. Met Therm offers a wide choice of RAL Classic colours, along with matt, semi-gloss, gloss and selected special finishes. Optional dual-colour coatings are also available, allowing a different finish inside and outside.

Yes. AG210 windows can be suitable for new-build projects as well as renovations and replacement projects. The range is Part L 2022 compliant, with Part Q and PAS 24 security options available where required.

AG210 windows include multipoint locking as standard. Enhanced-security designs are also available to help meet Part Q and PAS 24 requirements where required.

Yes. Met Therm Windows is a FENSA-registered installer, registration number 34045. For qualifying replacement projects, we can arrange for the necessary building-control certificate to be issued after completion.

Our thermally broken AG210 window and door frames are guaranteed for 10 years. Qualifying residential installations purchased by the homeowner may also benefit from an insurance-backed guarantee through HomePro Insurance. Terms and conditions apply.

HomePro Insurance provides insurance-backed protection for qualifying domestic installations. Depending on eligibility and policy terms, this can include protection for qualifying deposit payments, workmanship and materials.

Send us details of the windows or doors you require. We can work from architectural drawings and specifications or provide a budget quotation using photographs showing the windows in elevation. Please also tell us whether you require supply only or supply and installation, the type of property and the project location.