At Slenderpane® we manufacture slim glass units, for trade customers only, that allow the use of thermally efficient Slim Double Glazing where only single glazing would normally be allowed by planning and conservation officers.

Comprising top quality components, the high specification Slim Double Glazed Units (commonly known as slimlite or heritage units) have ultra slim sightlines that allow elegant, traditional fixed glazing bars to preserve the period character of the building, whether listed or within a conservation area.

Slim units are most commonly 11mm (4 x 4 x 3), 12mm (4 x 4 x 4) and 14mm (4 x 6 x 4) and sightlines are a standard 7mm or 6mm with the Heritage spacer.

For a quote please complete our Quick Quote form.

We offer a competitive, friendly and efficient service and all our slim double glazed units are made in Britain in our Haddenham workshop in Buckinghamshire.

Handmade in Our Workshop

All Slenderpane’s slim double glazed units are handmade in our Haddenham workshop in Buckinghamshire.

We use the latest technology to ensure our consistent high quality with an attention to detail throughout all our products.

We are producing toughened glass for our own units down to a size of 120mm x 120mm in our workshop.