Single Flange Rigid Frame Formers

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Product Code G282

Made to order
0.030 W/mK
75 to 130mm
Ready Assembled or Flat Packed
Order Specific
Extrusion: uPVC Styrofoam: CFC free extruded polystyrene

Product Description & Key Features

The Manthorpe Rigid Frame Former can be used in place of dummy timber frames – and beat more traditional methods of window construction on all counts. Strong, extremely simple to install and available in a multitude of widths, the product has been designed to improve efficiency, speed up installation and save man hours. Use of the Rigid Frame Former eliminates the site clutter that arises from dummy timber frames, which are prone to damage when left lying around.
The product provides a framework for the masonry construction around the window aperture and remains in place as a base for the window frame. The Manthorpe Frame Former achieves the required thermal break at the reveal of the window and door openings when fixed to allow a 30mm overlap into the cavity. This applies to sills, doors and rebated reveals.
Ready Assembled or Flat Packed
Choose the option that suits you best – just one phone call to Manthorpe and we can supply either ready assembled frame formers or cut-to-length, palletised flat packs.
Easy to transport and easy to store on-site, the flat pack version has proven to be extremely popular in tests, reducing clutter (no more piles of frames) and leading to quicker, better organised ways of working. Assembly is easy and fast – just click to fit.
Rigidity Ensured
Quick-to-fit corner braces and horizontal battens, secured with self-tapping screws, ensure that rigidity is maintained. For larger doors and windows, where extreme rigidity is required, a diagonal brace is also provided. Braces and battens are re-usable.
Project Specific Take-Off Service
For larger projects we offer builders, architects and developers a project specific take off service. Simply let us have the information or drawings and we will calculate the size of the window openings and supply Manthorpe Rigid Frame Formers specific to that particular development, streamlining operations, saving more time and increasing efficiency even further.
As well as windows and doors Manthorpe also offers P, T and Q shaped frames. With these larger frames we recommend that they are transported flat pack for reasons of safe delivery.
  • Removes the need for dummy window formers
  • Allows the cavity closer to be tied into the masonry construction
  • Provides a thermal break to the cavity
  • Acts as an effective vertical DPC barrier
  • Standard and Rebated profiles available
  • Make to order either premade or flat packed
  • Variety of shape configurations available

Literature and Technical Info

Related Products and Solutions

Vertical and horizontal thermal cavity closers installed around a window opening

Cavity closers to control moisture build-up

Thermal cavity closers prevent heat loss at key potential weak points in the cavity construct, at door and window reveals – heat loss that is both costly and avoidable. By solving cold bridging problems, properly installed thermal cavity closers can prevent condensation build up, damp and mould growth potentially leading to expensive repair work. Manthorpe’s cavity closers can act as effective vertical DPCs, although a dedicated DPC is recommended when used in a horizontal configuration. Furthermore, thanks to careful design and construction, they also offer maximum flexibility to configure to multiple size and dimensions requirements, including arched and round windows and doors. Our cavity closers are entirely British manufactured, as are the majority of our products; proudly supporting British manufacturing and minimising risk in the supply chain and in your project schedules.   Cavity closers – variations for all situations Cavity closers from Manthorpe are available in both double and single flange variations for use in standard in-line cavity wall details and rebated reveals, respectively. They are available to fit cavity widths between 50 and 150mm, although we can supply closers up to 350mm on a bespoke order basis. Supplied in standard lengths, our cavity closers can be easily cut to fit with a saw without any loss of thermal efficiency. Similarly, shorter lengths of cavity closer can be joined.  Some cavity closers can be preformed into frames or fixed directly on to window and door frames. Find details for your local Area Sales Manager on our Contact Us page, who will advise you of your nearest cavity closers stockist. Alternatively, find stockists for the full Manthorpe product range through our ‘Find a stockist’ facility. Just pop in your postcode for a list of your nearest stockists and accompanying maps and directions. And finally, remember to sign up for our new emails containing all the latest product updates, promotions and offers straight into your inbox.

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