MB-86 Fold Line HD
Open up entire walls. Heavy-duty accordion-style folding doors.
Technical Specifications
Frame Depth
3.39" (86 mm)
U-Factor (best)
0.18 (Uw 1.00, SI variant)
Max Glazing
2.05" (52 mm) triple pane
Max Panel Height
9.84' (3,000 mm)
Max Panel Weight
265 lbs (120 kg) per panel
Panel Count
2 to 8 panels
Folding Direction
Inward or outward
Threshold
Low profile or flush
Overview
What makes the MB-86 Fold Line HD
stand out.
The MB-86 Fold Line HD transforms solid walls into wide-open spaces. Panels fold and stack in an accordion configuration, creating unobstructed openings up to 3,000 mm tall. The HD (Heavy Duty) variant handles panels up to 120 kg each in configurations of 2 to 8 panels - folding inward or outward. Built on the MB-86 thermal platform with 86 mm frame depth, Fold Line HD delivers strong insulation even in multi-panel arrays. Low-profile thresholds and flush floor options enable barrier-free transitions.
Key Highlights
- HD variant: panels up to 3,000 mm height and 120 kg each
- Up to 8 panels per configuration for wide clear openings
- Built on the thermally-proven MB-86 platform (ST, SI variants)
- Inward and outward folding with traffic-door option
- Low-profile and flush threshold options for barrier-free access
- Triple-glazing compatible for cold-climate installations
Ideal For
Covered patios and outdoor entertaining spaces, kitchen-to-deck transitions, restaurant and bar indoor-outdoor concepts, and pool houses or cabanas. The HD variant suits large-scale openings in custom homes.
Consider an Alternative When
If you need large openings but prefer a sliding mechanism over folding, the MB-77HS lift & slide or Reynaers Hi-Finity offer wider spans per panel without the stacking bulk. Bifolds work best for moderate-width openings (up to ~25 feet).
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Interested in the MB-86 Fold Line HD?
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