The closer can be used in individual lengths, preformed into frames or fixed directly onto window and doorframes. Manthorpe’s cavity closer not only provides a thermal break to the cavity but also acts as an effective vertical damp proof course.

Please Select... BBA Certificate G240

Product code
G245
Plastic Fixing Clips
Packed in 100's

G246
Right Angle Clips
Packed in 50's

Strong, extremely simple to install and available in a multitude of widths, the Manthorpe Rigid Frame Former combines the function of a dummy timber frame and a thermal cavity closer into one easy to use product.

The Manthorpe Rigid Frame Former is designed to improve efficiency, speed up installation, save man hours and avoid the site clutter you get with dummy timber frames which are prone to damage when left lying around.

It comes in both single and double flange options.

The Manthorpe G280 Rigid Frame Former provides a simple time saving solution to cold bridging problems around window and door reveals. The rigid box design allows the cavity walling to be built up to the frame former without the need of manufacturing dummy window formers.

The Manthorpe G280 Rigid Frame Former not only provides a thermal break to the cavity but also acts as an effective DPC barrier.

The G280 Rigid Frame Former is designed to meet building regulations and achieves the required U value of 0.35w/mk at the reveal of door and window openings when the frames are fixed to allow a 15mm or larger overlap into the cavity.

The G282 Rigid Frame Former is a single flange version of the G280.

The G282 is suitable for use in rebated openings where the window frame is positioned behind the outer brick leaf.

The G280 and G282 Rigid Frame Formers can be supplied as a standard '4-sided' frame, or if prefered, 'P' frames or 'T' frames are availabe for a range of different opening details.

Both the G280 and the G282 can be supplied either readily assembled or cut-to-length and flatpacked.

Easy to transport and easy to store on-site, the flatpack 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 fast and easy - just click to fit.