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Sliding Patio Doors

Kommerlings PremiLine PRO is our impressive sliding patio door systems thats Lifetime Homes accredited.

Let natural light flood into your home

The PremiLine PRO sliding patio door is designed to fit in with you everyday life. This carefully designed sliding patio door is Lifetime Homes accredited so its easy to operate for anyone, young or old. The simple to use high security multipoint lock is a Police Approved Secured by Design specification. Our uPVC inline sliding patio doors can accommodate large spans of glass and offer slim sightlines, for a better view out to your garden. PremiLine PRO patio door is available with 2,3 or 4 panel openings for lots of design options. They have a very smooth running operation and you can choose from a variety of threshold options to make it easy to get in and out. It perfectly matches our Kömmerling PVCu window including a range of woodgrain colours so you can match your patio doors to the rest of your home.

PremiLine Pro Patio Door Gallery

Colour Options

The PremiLine PRO patio door is available in a large range of colours including White, Black, Rosewood, Mahogany and Golden Oak.


Ultion Security


PremiLine PRO is the high security version of the PremiLine system. It has a cleverly designed locking system and carries the Secured by Designed accreditation. It’s got the UK government’s new Document Q regulations on home security covered too. However, Harefield Improvements also offer the option to upgrade to an 11-pin Secure Diamond 3 star Ultion lock which can detect attack and enter a lock down mode.