Subframes UK are the largest supplier of welded and mechanically joined cavity closers in the UK

Subframes UK manufacture cavity closers to suit all makes and types of doors and windows suitable for brick and block, timber frame, Metsec or any other build type.

We offer a bespoke service designed to meet unique specifications from architect design to site approval with samples supplied.

Our cavity closers can be manufactured as 2, 3 or 4 sided frames supplied with or without vented heads, as circles, arches, ovals, mosque or as a combination T or P shaped flags.

Subframes offer standard, fire rated and structural frames from 50mm to 300mm all of which are manufactured to the highest standard in our 30,000sqft factory.

Cavity closer lengths

Profiles can be supplied in 6m or cut lengths. All profiles are BBA certified and meet part L of building regs. We offer a wide range of profiles from some of the countries leading extrusion houses.

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