Box Sash Windows

Box sash windows are an elegant and traditional form of sash windows. The window ‘box’ or frame houses a system of cords and weights which is used to operate the window.

Wooden Box Sash Windows

Wooden box sash windows are a timeless style of window, and can be seen on many kinds of property throughout the UK. They became popular in the 17th century, remaining the favoured and fashionable choice all the way through to the early 1900s in the Edwardian period. As such, if you own an older home or a period property, the likelihood is you have box sash windows. If you are in need of a window replacement in an older property, timber box sash windows will be a good choice, in keeping with the style of your home.

Our range of box sash windows includes many different designs. We offer a variety of glazing options, window grilles/grids, and woods. Our experts can help you match your sash windows to the period of your property, advising on a style which allows a sympathetic and authentic appearance. Alternatively, if you have a style already in mind, you can choose from a selection of hardwoods and softwoods, sash window horns, and panelled glazing designs.

Traditional Sash Windows

Wooden box sash windows are also known as cords and weights sash windows due to their operating mechanism. These traditional sash windows operate via a counterbalance system where a cast iron, steel or lead weight is pulled by a cord attached to the opening sash. This mechanism is housed neatly in the boxed wooden frame. Due to the traditional mechanism, cords and weights sash windows are generally preferred in conservation areas or listed properties.

Traditional style sash windows don’t mean you have to sacrifice modern features! We offer triple and double glazed wooden sash windows for strong thermal efficiency and sound insulation. This means with a sash window replacement, you can enjoy the performance of a modern window with the elegant style of traditional box sash windows. With good guarantees on all our windows, you can also rest assured of their quality.

If you are looking for timber box sash windows online, check out the range available from Windows & More. You can take a look at our gallery for inspiration, or get in touch with our friendly team with any enquiries.

Free Delivery to all UK Mainland Orders!

With our expert advice, we can help you find the best style for your property all whilst you benefit from modern high performance and security advancements. Enquire about your bespoke windows today!

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Why Choose Cords & Weights Sash Windows?

Classic Period Style

If you have a period property, keep that rich history intact with bespoke cords and weights sash windows.

Quality Guarantees

 Our products are all protected by long-lasting guarantees so you can be sure your investment is protected over time.

Modern Thermal Performance

Just because the style is from the 17th Century,doesn’t mean your thermal performance has to be.

Product Information

  • Materials: solid European oak, sapele & meranti dark red hardwoods, treated & engineered finger-jointed pine softwood
  • Bar designs: a variety of traditional glazing bars or astragal bars, including cottage bar and Victorian bar
  • Sash horns: 8 designs to choose from
  • Colours: hi-build white as standard, but all RAL colours available (extra cost)
  • Hardware options: polished, satin chrome, black, brass, white
  • Security options: Part Q and Secured by Design available
  • Ventilation: trickle vents included for Part F or omitted


  • Window sizes: we can create bespoke windows for effectively any dimensions required
  • U values: 1.1 triple glazed/1.4 double glazed
  • Window energy rating: B rating as standard, can achieve A+ with triple glazing
  • Glazing options: double & triple glazing available
  • Acoustic performance: 29dB
  • Air permeability class: class 2
  • Frame thickness range: 140mm to 148mm
  • Sill size range: 140 to 240mm

Contact Us

If you have queries about the above range, get in touch and we’ll answer them. With a wide range of bespoke windows available,we’re happy to discuss how we can help you!


01205 363 999