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We handcraft windows to suit your particular style and ensure an excellent match for your home. If you are looking for bespoke windows then our steel window alternative can provide the perfect substitute.

AG210 metal windows are polyester powder coated: frames can be coated in any standard RAL colour: in a choice of finishes including matt, semi-gloss, gloss and hammerite finish. Dual colour is also available – where frames are painted one colour inside and a different outside is available on request.


 The thermally efficient frames of the AG210 windows and doors are glazed using 24mm double glazed argon-filled units with warm edge spacer bar technology and the latest thermally efficient glass providing a BFRC ‘A+10 rated’ window, making your home lighter brighter and warmer.

For more information on the BFRC and their ratings visit

Simulated Leaded Units

Using flat or rounded leads in a range of widths, all soldered and antiqued for greater authenticity and to replicate the features of your period windows. Choose from rectangular, diamond, Queen Anne, abstract and bespoke designs, including colour panes and stained glass effects.

Special Commission Units for Bespoke Windows: To retain a well-loved leaded design or achieve the reflective quality of individually glazed leaded panes within a double glazed unit. If you would like to know more about these special commission units please call 01730 89 47 45.Cottage Pane/Georgian Pane

Replicating the small panes of Georgian windows or Cottage windows.
External putty line bar, and internal fenestra bar and traditional ‘lap joint’.

Replica Cast Iron / Bronze / Iron Window

AG210 may be suitable for the replacement of cast iron, bronze and iron windows.

To find out how this bespoke window may meet your project needs please give us a call on 01730 89 47 45


AG210 metal windows are fitted with traditional fully working welded hinges and peg stays as standard, providing the traditional features so often required to achieve an authentic match in period and conservation replacements/renovations. Traditional stays can be replaced with sliding stays to maintain period features of original windows.

If you need to replace your existing doors or windows and would like an idea of cost and design, then please contact us today on: 01730 89 47 45 or email us at

Met Therm is a family run business with a dedicated team who draw on their extensive experience within the replacement steel windows industry to meet the needs of customers. Recognising the distinctive and coveted features of steel windows and doors, we can design composite aluminium product which counters the issues traditional windows or period windows can create.

Perfect for restoration and renovation projects, replacement windows and Part L compliant for new builds*, our windows and doors are handmade to measure by our skilled craftsmen.

Met Therm provide a wide range of doors and windows including a variety of metal windows, period windows and bespoke windows. Customers can personalise their choice further by selecting hinges, handles and paint finish to ensure an authentic replacement is supplied. With over 250 colours and a choice of finishes there are plenty of options to complement your design and project.

Our windows (and doors) can be installed direct to brick, stone or wood surrounds and we can replicate beautiful leaded lights, small Georgian/cottage panes or the classic lines of the 1930s window and also offer bespoke designs.

Met Therm’s stylish doors and door screens transform the look and feel of your room with slender sections and slim line framing for maximum vision and light. All doors are crafted by hand, allowing you to create a traditional style with or without kicking panel, contemporary clear glazing, or a more industrial welded bar design.

The Met Therm Team will be happy to discuss your specific requirements. We have extensive experience of tailoring our products to meet our customer’s needs and focus on ensuring a quality service.