Cleartherm GSU..

During 20 years of making high quality glass sealed units Cleartherm have established themselves as one of the leading manufacturers in the Midlands.

Based in Leicester, Cleartherm's £ I million investment in state of the art glass toughening and automated facility means they manufacture the highest performance sealed units- incorporating award winning Super Spacer® warm edge technology making it easy to achieve a high energy rating for your windows.

We promise customers consistently high quality insulated glass units delivered on time, including gas filling as required.

We provide comprehensive marketing support to help our customers sell more windows.

Cleartherm provide the most advanced, thermally efficient sealed units at no extra cost, compared to competitor's standard units, still manufactured with highly conductive conventional aluminium spacer bar.