4mm Low-E Float / 6mm Xenon cavity / 4mm Float
Request made-to-measure heritage double glazing combining 4mm Low-E Float on the inside, a 6mm Xenon gas cavity and 4mm Float as Panel 2. This separate 14mm nominal sealed-unit make-up is available to discuss with a specialist supplier.
Exploded Sealed Unit Architecture
Slim double glazing with a 4mm float pane
Choose the 4mm float second-pane option to discuss a made-to-measure heritage sealed unit for a timber sash window or metal window frame. The supplier checks the frame rebate, finished size and selected Low-E glass before confirming the order.
For this 4mm Float product, the selected 6mm cavity and Xenon gas give an indicative U-value baseline of 1.2 W/m²K. Panel 1 is 4mm Low-E Float; Panel 2 is 4mm Float. The total nominal unit thickness is 14mm. Confirm your rebate depth, sightline, spacer colour and the declared thermal performance with the supplier before ordering.
Choosing 4mm Float for heritage double glazing does not establish planning or conservation permission. Your supplier should confirm the exact product, and any required appearance match or project approval must be checked separately.