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Modern living room with a corner sofa, fireplace, and large folding glass doors opening to a patio with a view of a lake and trees at sunset.
Made to measure

Aliplast AB-38 Slimline Bi-fold Doors

An 88 mm sightline and large glazed leaves for a more refined aluminium bi-fold opening.

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Sightline88 mm
Sash capacity140 kg
Thermal1.1 W/m²K
Secured By Design
ISO 9001 Certified
FENSA Registered
Constructionline Gold

Aliplast AB-38 Slimline Bi-fold Doors Features

Start with the published benefits that most affect performance, appearance and day-to-day use.

A slimmer frame for larger bi-fold leaves

AB-38 brings an 88 mm sightline together with a maximum published sash weight of 140 kg, helping reduce the visual interruption across wider openings.

Aliplast AB-38 slimline bi-fold door product guide and system image

88 mm sightline

A slimmer published meeting sightline for a refined appearance.

Up to 140 kg

Published sash capacity for substantial glazed leaves.

Quadruple locking

A four-point locking arrangement is listed in the supplier data.

Aliplast AB-38 bi-fold door dimensions and technical data

Use fewer, larger leaves where appropriate

The available leaf sizes can support a calmer elevation, subject to wind loading, glass weight and site conditions.

  • Use leaf sizes that keep the elevation balanced and the stack manageable.
  • Check glass weight, wind load and opening dimensions during survey.
  • Place the lead leaf around the most useful day-to-day route.

Match operation to the opening

Stainless steel rollers, threshold choices and the panel layout should be reviewed as one operating system.
  • Choose the track and threshold around exposure and floor build-up.
  • Keep rollers, guides and hinges within a coordinated maintenance plan.
  • Confirm opening direction, parking space and handle clearances.
Cross-sectional view of an aluminium window frame featuring double glazing, insulation layers, and multiple chambers for thermal efficiency.
Compare the evidence

Product Specifications

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Features & benefits

What this system is designed to do

Use these practical characteristics to judge whether the product suits the opening, architecture and way the space will be used.

Slim 88 mm sightlineReduces frame interruption across the folded elevation.
Large sash dimensionsPublished leaves up to 1300 x 3000 mm within system limits.
28-44 mm glazingSupports a useful range of insulated glass specifications.
Stainless steel rollersHardware selected for smooth folding movement.

Gallery

Browse installations, product details, and finish inspiration from recent projects.

Modern living room with a corner sofa, fireplace, and large folding glass doors opening to a patio with a view of a lake and trees at sunset.
Aliplast AB-38 slimline bi-fold door product guide and system image
Aliplast AB-38 bi-fold door dimensions and technical data
Glass folding doors open to a modern patio with outdoor furniture, greenery, and a swimming pool visible in the background.
A modern living space with light wood floors and a yellow rug, featuring folding glass doors opening to a balcony with outdoor seating and a view of a tree.
Cross-sectional view of an aluminium window frame featuring double glazing, insulation layers, and multiple chambers for thermal efficiency.
Modern living room with a corner sofa, fireplace, and large folding glass doors opening to a patio with a view of a lake and trees at sunset.
Aliplast AB-38 slimline bi-fold door product guide and system image
Aliplast AB-38 bi-fold door dimensions and technical data
Glass folding doors open to a modern patio with outdoor furniture, greenery, and a swimming pool visible in the background.
A modern living space with light wood floors and a yellow rug, featuring folding glass doors opening to a balcony with outdoor seating and a view of a tree.
Cross-sectional view of an aluminium window frame featuring double glazing, insulation layers, and multiple chambers for thermal efficiency.
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Frequently Asked Questions

Clear answers to the practical questions that often shape the final specification.

Do I need a survey before ordering?
Yes. Final sizes, configuration, thresholds, glass, hardware and installation details should be confirmed through a measured survey and written quotation.
Can I choose the frame colour and hardware?
Colour and hardware choices depend on the selected system. We will confirm available finishes, samples, compatibility and any effect on lead time before order.
How does AB-38 differ from AB-60?
AB-38 has the slimmer published sightline and larger maximum leaf dimensions. AB-60 offers a different performance and threshold package. We compare both against the actual opening.
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MaterialAluminium
Product typeBi-folding Doors
SystemAliplast
Sightline88 mm
Sash capacity140 kg
Thermal1.1 W/m²K
Modern living room with a corner sofa, fireplace, and large folding glass doors opening to a patio with a view of a lake and trees at sunset.
Product mediaAliplast AB-38 Slimline Bi-fold Doors
Published strengths

What stands out on this system

  • More natural lightGlazing, sightline or large-opening details support brighter spaces.
  • Thermal comfortPublished content includes thermal, insulation or draught-control benefits.
  • SecuritySecurity hardware, locks or tested security standards are referenced.
Key documents
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