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Slimline Sliding Door
Slimline Sliding Doo
Slimline Aluminium Sliding Door
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Klosen – Slimline Doors & Windows

We offer a range of Slimline Sliding doors, Bi-fold doors and Windows that are stylish and luxurious in design and elegant in function. Each door and window will be individually crafted with the desire to embed a premium, contemporary and sophisticated gateway to your home. Slimline Aluminium doors and windows create space and surge your property with natural light allowing a unique and calming environment. Our customers think the same too.

Excellent Quality & Quick Service

5 5 1
Klosen recently installed 3 sets of sliding doors on my extension and I found them to be superb from beginning to end. It was very helpful that they were knowledgeable of many of the systems available and were able to offer multiple products, as this helped me get a good quality product that was also competitive with other quotations I received. Would definitely use them again.

Happy & Would Recomend

5 5 1
Klosen installed some aluminium windows, sliding doors and a front door for ourselves recently. Very easy to deal with them all, and extremely happy with the products received and the installation quality. They offered a great range of products, not just one or two, which we found very important when making our decision on window & door supplier for this project. We would happily use again and recommend.


5 5 1
Having searched for along time for an installer of high quality aluminium windows I was very relieved when I found Klosen. They were excellent from beginning to end, with very knowledgeable staff.

Key features & benefits

Thermal Insulation

The material has built-in thermal properties which will improve heat insulation for your home.

Natural Light

A thin frame and maximized glass will enable a source of natural light into your home, making your rooms brighter.

Aesthetic Design

The slimline range will integrate a beautiful aesthetic with traditional surroundings that will make your home contemporary.

Strong & Seamless

Aluminum is a strong & lightweight material which will allow a smooth but sturdy function.

Bifold Doors

Our Bifold doors offer a contemporary and seamless design that will add a modern yet stylish touch to your home. The slimline bifold door range is the perfect way to extend your property, adding space, light and luxury to your living space.

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Sliding Doors

Introducing a slimline sliding door will offer a streamlined design that opens your home with an abundance of natural light through its minimalist but beautiful craftsmanship. Slimline sliding doors truly blend functionality with aesthetic by optimising your entranceways panoramic views.

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Slimline aluminium windows will embed maximum light and offer a contemporary design that will fit with any home. Not only are the slimline widows stunning in design, but they offer maximum durability and strength to your home.

Our windows bring timeless appeal to your property, perfectly matching function and appearance.

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