Glass Units

Order Thin Sealed Units below

Order Bespoke Slim Sealed Glass Units Online

At Sealed Units Online we pride ourselve on quality Sash window glazing products with great customer service. Our online Sealed Unit service is designed to allow you to easily order glass sealed units for sash windows direct from the manufacturer - minimising admin to lower costs. Our service is backed up by experienced craftsmen and the latest in sealed unit technology.

Inner Glass

We currently offer 3mm Softcoat, 4mm Softcoat, 4mm Softcoat High Performance or 6.4mm Softcoat Laminate Inner Glass options.

Cavity Width
Please Select
Spacer Bar
Please Select

Krypton Filled - Now choose your Cavity Width. We offer 4mm, 6mm and 8mm for Cavity Options. Please note that larger sized units are only available with a wider cavity

We even have options on what colour Spacer Bar is required. Our current options are White, Black or Silver.

Outer Glass
Please Select

Unit Dimensions W x H

We offer 3mm Clear, 3mm Machine Drawn, 3mm Hand Made P1, 4mm Clear, 6mm Clear, 6.4mm Laminate, 6.8mm Accoustic or 4mm Pattern.

Toughened glass is used when safety, thermal resistance, and strength are important considerations. Breaks into small cubes to minimise injury.

 mm x H  mm 
Price £30.24  Add To Order

Many thanks to Sealed Units Online. You have helped us to turn our draughty old Victorian house into a much warmer place to spend the winter! The whole ordering process was extremely simple with the very accurately made glass units arriving on time and in perfect condition. Great work! Thanks!


Andy D, Oxfordshire


I purchased over 20 sealed units to change all of the glass in my house. Delivery was quicker than expected and all units were to specification, including different thicknesses, different spacers, some toughened glass, some obscured, some clear. I enjoyed using the website, ordering was easy with the help of Customer Services, in all a good experience.


Keith R, Midlands

SealedUnitsOnline Van



We offer a full UK delivery service on all sealed units.

Option 3 DAY* - £180 any location within Mainland UK.

Option 7-10 DAY* - £60 any location within Mainland UK.

Option upto 14 DAY* - £30 any location within Mainland UK.

Option upto 21 DAY* - £15 any location within Mainland UK.

Option upto 28 DAY* - FREE any location within Mainland UK.

Please note that our delivery options are an 'upto' service this means in most cases our deliveries are made much earlier than the amount of days selected. However this is not guaranteed but merely a guidline. Operating our own delivery service we ensure your Glass Units arrive in perfect condition. For orders outside of UK please contact us so we can help calculate a price and arrange with a preferred ferry shipping company.

*3, *7-10, *14, *21 or *28 full 'working' days. Any special requirments can result in additional delivery time. This will be advised shortly after placing the order. Prices for delivery are subject to VAT.


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