Clear Double Glazed Unit - Standard (Residential Replacement)

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Clear Double Glazed Unit — Maximum Light for Living SpacesWhen maximum natural daylight is the priority, our Clear Double Glazed Unit delivers ~80% light transmittance — the bright est sealed unit in our range. With no Low-E coating to slightly tint the view, you get crystal-clear, colour-neutral glass that floods rooms with natural light.Ideal for internal partitions, porches, conservatories, and secondary glazing where thermal performance is secondary to light and clarity. In rooms that struggle with natural light — basement windows, north-facing kitchens, rooms with deep reveals — this unit maximises every lumen.SpecificationTwo panes of clear float glass separated by a sealed cavity. Available in 24mm (4-16-4) or 28mm (4-20-4) overall thickness to suit your frame rebate. U-value: 2.8 W/m²K (air) or 2.6 W/m²K (argon upgrade) Light transmittance: ~80% Overall thickness: 24mm or 28mm Glass: 4mm clear float both panes Note: this unit does not meet current Building Regulations Part L for heated living spaces. For heated rooms requiring Building Control sign-off, choose our Low-E Argon IGU or triple-glazed range instead.Manufactured to BS EN 1279 at our Bristol facility. FENSA registered, 10-year warranty, nationwide delivery.Use our glass configurator for instant pricing on your exact dimensions. Show more