White float windows Float glass windows are a cheap source as a protective element between two environments. They are cut from sheet glass that is relatively flat and parallel for most purposes. As no polishing is required they are cost effective. Float glass is now listed down to 1.1mm thick (thinner to order) and the 'white' grade used for the thicker windows has much less green coloration than common soda float glass. Polished grade (λ/2) White Float Window is also listed for more precision applications. AR-coated windows are also listed for improved efficiency; the single-sided type can be used for laminating. Also listed are Indium Tin Oxide (ITO) coated windows which is used for displays, electric heating, EMI shielding etc.
Knight Optical > Windows > White Float Windows - ITO coated one side Only UK and EU customers are charged VAT at 17.5%, customers outside the EU and EU customers based outside the UK who have a valid EU VAT number will not be charged VAT Bulk Discounts! Where (B) appears next to a price below, bulk prices are available, click the (B) button to view! PDF Part No. Material Size/dimensions (mm) Thickness (mm) Price Qty Buy WIW2000-I02 White float glass 20 dia 1.1 £7.95 WIW2500-I02 White float glass 25 dia 1.1 £8.90 WIW4000-I02 White float glass 40 dia 1.1 £9.55 WIW5000-I02 White float glass 50 dia 1.1 £10.65 WIW5050-I02 White float glass 50 x 50 1.1 £9.45 Knight Optical > Windows > White Float Windows - ITO coated one side
Specification   Material: Float Glass “White grade” (3mm / 6mm thk) Material Data: (see materials section) Diameter: +0, -0.2mm Length, width: ±0.25mm Thickness nominal Flatness:      Float type 0.5λ over 10mm dia (1.1mm thk)    (typical) 1-2λ over 25mm dia (3mm/6mm thk)    Polished grade λ/2 or over 90% of aperture dimensions Scratch-dig <60-40 Parallelism <1’ (polished type) AR coating Multilayer for visible (see coatings section) ITO coating Square resistance <2λ (see coatings section)
Specific requirements We can cut White Float Windows to any size at short notice, so if your requirements are not listed please contact us by telephone / fax or email: stockrequirement@knightoptical.co.uk Options available   · Mounting (circles up to 50mm)   · Cutting down or edged to special sizes and coatings   · Other coatings available See also Precision glass windows-BK7 type (λ/4)