"Safe, secure, efficient and great looking doors"

Why Choose ModLok Bi Fold Doors?

ModLok Bi Fold Doors videos
The range of Liniar bi-folding doors
7 reasons to choose a Liniar bi-fold door
Bi-fold Operation Guide

No other PVCu bi-folding door has been tested to over 127,000 full opening cycles; and with low U-values, PAS:24 and Secured By Design accreditation, the Liniar ModLokTM is in a class of its own – earning the accolade of a Queen’s Award for Enterprise in Innovation in 2017.
Ideal for large openings, ModLokTM bi-folds enable you to open up an entire wall of your room – creating space and letting fresh air and natural daylight flood into your home.


And Liniar’s ‘top of the range’ ModLokTM bi-fold doors offer even greater strength and rigidity, combining all of the structural benefits of an aluminium door set with the energy efficiency of uPVC.
All Liniar bi-folding doors are ‘bottom rolling’, not top-hung – meaning no extra stresses are placed on your building’s lintel.


Whether you have a bedroom with a Juliette balcony, a kitchen-diner, a conservatory or an orangery, Liniar ModLokTM bi-folding doors can provide a stunning alternative to patio or French doors. Available in a wide choice of opening configurations and colours, the Liniar ModLokTM bi-fold has ultra-slim sightlines, providing rooms with a clean, modern appearance. Safety features include the innovative low threshold option for family friendly and wheelchair use. What’s more, Liniar bi-fold doors offer high energy efficiency, combined with the best security features on the market – bringing you a modern space-saving solution for your home that will definitely give it the ‘wow’ factor. Find out about the range of thresholds available from your sales representative.

So, what are the benefits?
  • Queens award for outstanding achievement
  • 10-year Profile warranty
  • Available from an entry level “C” Rated to an “A+” Energy rating
  • Your Bi-Fold Plus benefits from being fitted with the most robust locking mechanisms on the market
  • Smooth easy action
  • Full colour range
  • Hook locking with shootbolts
  • Secured by Design Security upgrades available on request
  • Minimum size 600mm w x 1850mm h (sash opening sizes)
Why Choose ModLok Bi Fold Doors

Choose from a wide variety of colour options including: White, Rosewood, Cream, Light Oak,
Chartwell Green, Grey and classic Ebony Black. Liniar products are also offered in a wide choice of
bespoke colours, please see Renolit foil book, (subject to availability and price on application only).

Colours Available
  • Rosewood on white *
  • Golden Oak on White *
  • Anthacite Grey on White *
  • Cream Foiled on white *
  • White Foiled on white *
  • Chartwell Green on White *
  • Ebony Block on white *
Bespoke Colour options
  • Oregon
  • Anteak
  • Agate Grey *
  • Silver Grey *
  • Basalt Grey
  • Grey
  • Blue
  • Dark Green
  • Dark Red
  • Irish Oak

Colours marked * are from our standard collection, all other colours are subject to price and availability on application. Please note: colours are for illustration purposes, for an exact example please ask your sales representative for a Renolit swatch sample.

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