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Aluminium sliding door with slim charcoal frames open from a Dubai villa onto a stone terrace, one leaf parked behind the other
  • SLIDING SYSTEM
  • GUTMANN

GUTMANN GLS 125

GLS 125 is a GUTMANN lift-and-slide window and door system with a 125 mm frame and a 52.5 mm sash for wide, heavy terrace doors in villas and apartments. Panels go up to 3000 × 3000 mm and 400 kg, glass up to 42 mm. The panel lifts off its seals to slide and drops back onto them to close, which keeps it tight against wind and rain.

  • 125 / 52.5 mm Frame / sash depth
  • up to 400 kg Sash weight
  • up to 42 mm Glass thickness
Get a price

Technical data

Lift-and-slide window and door with a 125 mm frame and a 52.5 mm sash for heavy panels up to 3 m wide and 3 m high.

Values are the manufacturer's published figures for the series; the actual value depends on the configuration — glass, size and hardware. Which series fits your opening is settled at the free survey.

Manufacturer data
System type
Sliding system
Material
aluminium
Opening
lift-and-slide
Frame / sash depth
125 / 52.5 mm
Sash size
up to 3000 × 3000 mm
Sash weight
up to 400 kg
Glass thickness
up to 42 mm
Watertightness
1050 Pa
Wind load resistance
Class C5/B5
Air permeability
Class 4

Gutmann Middle East LLC in Dubai Investment Park 2 offers GLS 125 in the UAE. We fabricate it at our Dubai factory to the manufacturer's specification and install it with our own crews.

Why lift-and-slide for a terrace

A normal slider rolls on its seals all the time; a lift-and-slide panel rises on its rollers when you turn the handle and settles back onto the gaskets when you close it. The result is a panel that moves lightly despite 400 kg and a seal that presses tight when shut. For a villa living room onto a pool deck or a garden it is the usual choice for panels of this weight.

What the figures mean in the UAE

GLS 125 publishes watertightness 1050 Pa, wind class C5/B5 and air permeability class 4. These are strong values for an exposed terrace and help an air-conditioned room hold its cool air. Glass up to 42 mm takes solar-control and laminated layers; the thermal value of the finished door is confirmed by calculation before the order.

A symmetrical profile uses the same accessories inside and out, and the meeting stiles are sealed with a simple system. On a sandy plot the track still needs cleaning, and we set the threshold so that water drains outward.

GLS 125 or GLS 180

GLS 180 has an 80 mm leaf, takes glass up to 60 mm, publishes sound insulation up to 44 dB, burglar resistance up to RC 2 / WK 2 and watertightness E1350. GLS 125 publishes panel sizes and weights, which GLS 180 does not. Choose GLS 180 for thick acoustic or security glass; GLS 125 when published panel limits up to 3000 × 3000 mm and 400 kg are what the design needs.

GLS 125 is the GUTMANN lift-and-slide door for heavy terrace panels up to 3000 × 3000 mm and 400 kg with top wind class and good water figures.

Other GUTMANN systems

Other series from the same range — compare the figures before the survey.

  • Sliding

    GUTMANN SC89

    Sliding door with a 98 mm frame and a 35 mm sash profile for medium-size panels.

    Frame / sash depth
    98 / 35 mm
    Sash size
    up to 2200 × 2400 mm
    Sash weight
    up to 110 kg
    Glass thickness
    24–28 / 30 mm (sash type 1 / 2)
    Watertightness
    450 Pa (ASTM E 331-00)
  • Sliding · single track (monorail) · lift-and-slide (option)

    GUTMANN SC115

    Sliding window and door with a 115 mm frame and a 50 mm sash, available as a single-track monorail with curtain wall integration and with a lift-and-slide option.

    Frame / sash depth
    115 / 50 mm
    Sash size
    up to 3000 × 3000 mm
    Sash weight
    up to 200 kg
    Glass thickness
    up to 42 mm
    Watertightness
    E800
  • Sliding · raised, hidden or semi-concealed track

    GUTMANN Vision One

    Sliding door with a 159.6 mm frame and a 63 mm sash for tall panels, with concealed handles, multi-point locking and raised, hidden or semi-concealed tracks.

    Frame depth
    159.6 mm
    Sash depth
    63 mm
    Sash size
    up to 1500 × 4000 mm
    Sash weight
    up to 300 kg
    Glass thickness
    32 mm
  • Sliding · single, double or triple track · corner-free (360°)

    GUTMANN Horizon Minimal Slim Slider

    Minimal-frame slider in two versions, SOL and LUNA, on stainless steel rollers and tracks; the frame can be built into the wall, ceiling and floor.

    Sash weight (LUNA)
    up to 1000 kg
    Glass thickness (LUNA)
    up to 54 mm
    Sash size (LUNA, W × H)
    up to 3000 × 6500 mm
    Sash weight (SOL)
    up to 500 kg
    Glass thickness (SOL)
    up to 36 mm
  • Sliding · lift-and-slide

    GUTMANN GLS 125 SG

    SG version of the GLS 125 lift-and-slide door: the same 125 mm frame, 52.5 mm sash and panel limits, published with wind load class C4/B5.

    Frame / sash depth
    125 / 52.5 mm
    Sash size
    up to 3000 × 3000 mm
    Sash weight
    up to 400 kg
    Glass thickness
    up to 42 mm
    Watertightness
    1050 Pa
  • Sliding · lift-and-slide

    GUTMANN GLS 180

    Lift-and-slide door with an 80 mm leaf for large glazed openings, built from straight-cut profiles with a symmetrical design inside and out.

    Leaf depth
    80 mm
    Glass thickness
    up to 60 mm
    Sound insulation
    up to 44 dB
    Burglar resistance
    up to RC 2 / WK 2
    Watertightness
    E1350
Modern villa with panoramic aluminium glazing and a pool at sunset

Get a price for this system

Send the opening sizes or a photo and we reply in WhatsApp within 15 minutes, and an engineer measures on site within 30 minutes, free.

The honest downside

When GLS 125 is not the best fit

Glass is limited to 42 mm, so the thickest acoustic or security build-ups do not fit, and no sound or burglar class is published. A lift-and-slide door also needs a deeper frame and a heavier handle action than a light slider, which is more than a small balcony needs.

For bedrooms on a busy road or ground-floor openings that need a security class, GLS 180 takes glass up to 60 mm, publishes up to 44 dB and RC 2 / WK 2.

GUTMANN GLS 180 Consider instead GUTMANN GLS 180

Frequently asked questions

Up to 400 kg, with a size up to 3000 mm wide and 3000 mm high.

Both: the supplier describes it as a lift-and-slide window and door. Most often we fit it as a terrace or balcony door.

The published figures are the same except the wind class: C5/B5 for GLS 125 and C4/B5 for GLS 125 SG. The difference in build is confirmed with the supplier for the project.

Send the opening sizes on WhatsApp, we answer within 15 minutes. The survey is free with an engineer on site within 30 minutes; production takes 3–5 weeks from the signed contract.

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We are always happy to welcome you at our showroom

Main Office

Dubai, Showroom

The Pinnacle Building, Sheikh Zayed Road, Office 607

Mon–Fri: 9:00 – 18:00

+971 50 220 6913

Showroom

Samples to see in person

Profiles, glass units and hardware to see and touch before you choose.

Dubai, Showroom The Pinnacle Building, Sheikh Zayed Road, Office 607
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