French/Double Doors

French doors are a traditional and very functional alternative to patio doors and there is no disputing the aesthetic value of French doors.

Their design offers a stylish and functional option with the doors opening inward or outward, depending on your choice. Adding a traditional touch to any style home while offering, modern thermal performance and security our French doors are available in all of our ranges including uPVC, timber or aluminium.

Security features on our doors include multi- point locking, extremely solid hinges and toughened safety glass to help keep you and your family extra safe. All you have to do is choose the material and style you want and we’ll create a door to suit your home perfectly.

Safe and secure

The shootbolt locking mechanism in each Liniar bi-folding door ensures the door is bolted firmly into the stainless steel track, maximising your security

Built in anti-lift features, anti-bump cylinders and optional anti-snap cylinders combine to bring you peace of mind.

Liniar’s bi-folding door range is also available with ModLok™, a new concept in locking technology.

ModLok™ is a highly innovative combined reinforcing and locking mechanism, bringing additional strength and rigidity to the doors and enabling you to have even wider configurations of bi-folding doors. ModLok™ also offers enhanced security features including 3 opposing hooks and 2 shootbolts built in to every master door, plus 2 anti-lift shootbolts on every slave door.

The Liniar ModLok™ bi-fold offers all the structural benefits of an aluminium door set combined with the thermal benefits of PVCu. For more information please visit

Fully Accredited

Secured by Design

Liniar Secured by Design products are designed with exceptional security features and confirmed as meeting the requirements of the Association of Chief Police Officers.

BS EN ISO 9001:2008

Liniar’s factory has BS EN ISO 9001:2008 accreditation for quality management systems - proving its strong customer focus and continuous improvement cycle.


An independent testing house conforming to British standards and accredited by UKAS and the BFRC. Liniar’s ModLok™ bi-fold door was first to pass its Folding/Sliding Door Scheme.

PAS 24:2012

The British Standard for enhanced security performance, PAS 24 testing also includes testing for air and water tightness and wind loading to BS 6375.