Bi-Fold Doors

SRL Ltd’s bi-fold doors are made from Senior Architectural Systems thermally- broken SPW400 high quality profiles, which ensure durability in all kinds of weather, long life, a modern look and high heat and sound insulation levels. SRL can offer aluminium bi-fold doors up to 4 metres high in any combination, which few companies can match.

SRL bi-fold doors feature:

70mm slim-line frame profile; just 60mm wide vent profile.

Up to 6 metres wide as standard. (if you require wider widths please contact our office)

Floating sliding mullions provide stability for easy glide operation.

Polyamide thermally-broken aluminium profile.

Multipoint security locking on main door and shoot bolt locking on intermediate stiles.

32mm internally glazed sealed units, for increased security.

Virtually maintenance free.

All doors are made to measure.

Optional Features

Aluminium Bi-fold doors can open-in or open-out.

Standard frame or low threshold and various sill options.

Wide scale of RAL and BS powder coating finishes; anodised and polished finishes available.

Single and dual colours available.

Glazing – choice of toughened, laminated, anti-sun, Georgian grill or unglazed etc.

Choose from a choice of colours for handles and spacer bars.

Slides left or right, or split to fold left and right on opening.

3, 4, 5, 6 and 8 panels with various opening options as standard.

We also fabricate from the Smart Systems Aluminium range.


Visofold is a unique slide-and- fold dual-hollow aluminium system. The doors which sit in a rebated frame have an external curved shape with internal beading. Bottom wheels and top glider are safely concealed within a dedicated floating mullion with the door leafs being joined by a butt type knuckle hinge. Visofold doors are suitable for domestic and light, medium and heavy-duty commercial applications.

Visofold Panorama

Smart’s latest edition to the Visofold range of slide-folding doors. Visofold Panorama offers elegant slim sightlines, coupled with highly engineered hardware which is designed to ensure years of reliable service.


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