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Stick-built aluminium curtain wall with slim dark mullions on a mid-rise Dubai office building
  • FACADE SYSTEM
  • GUTMANN

GUTMANN EF 68/EF 68+

EF 68/EF 68+ is a GUTMANN unitised curtain wall with a 68 or 78 mm face width, for towers and large buildings with a regular floor grid. Units go up to 2600 × 3600 mm and 300 kg, with glass 26–38 mm; the EF 68+ version takes glass up to 52 mm with optimised insulators and gaskets. Corners are mitred, and the appearance can be glass bead, SG or semi-SG.

  • 68 or 78 mm Face width
  • up to 300 kg Element weight
  • 1000 Pa Watertightness
Get a price

Technical data

Unitised curtain wall with a 68 or 78 mm face width and mitred corners; the EF 68+ version takes thicker glass with optimised insulators and gaskets.

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
Facade system
Material
aluminium
Opening
unitised curtain wall, structural glazing
Face width
68 or 78 mm
Glass thickness
26–38 mm (EF 68+ up to 52 mm)
Element size (W × H)
up to 2600 × 3600 mm
Element weight
up to 300 kg
Butt joint
10 mm (20 mm optional)
Watertightness
1000 Pa
Wind load resistance
Class C5
Air permeability
Class AE

EF 68/EF 68+ is offered in the UAE by Gutmann Middle East LLC, Dubai Investment Park 2. We make and glaze the units in our Dubai factory to the manufacturer's specification, and our crews hoist and seal them on site.

A unitised wall with published limits

Many unitised facades are designed from scratch for each project. EF 68 publishes its limits: units up to 2600 mm wide and 3600 mm high, up to 300 kg, which covers the typical floor-to-floor height of offices and residential towers. That lets the architect set the grid early and the structural engineer check it against wind and movement. A high degree of prefabrication keeps site work short.

EF 68 or EF 68+

Standard EF 68 takes glass 26–38 mm, enough for a solar-control double-glazed unit. EF 68+ is the special construction for projects that need more: optimised insulators and gaskets and glass up to 52 mm, room for laminated or acoustic layers on a tower next to a highway. The basic butt joint is 10 mm, with 20 mm as an option, and the units seal with an overlapping system at the joints.

Watertightness 1000 Pa, wind class C5 and air permeability class AE are published. The thermal value of the wall with your glass is confirmed by calculation before the order.

EF 68 or the Unitized curtain wall

The Unitized curtain wall is the GUTMANN unitised system designed per project, with watertightness 1000 Pa and wind class C5 but no published unit sizes. Choose EF 68 when its 2600 × 3600 mm and 300 kg limits fit the building. When they do not, or the units are shaped for the project, the Unitized system is designed with GUTMANN and the unit sizes are confirmed for that building.

EF 68/EF 68+ is the GUTMANN unitised curtain wall with published unit limits up to 2600 × 3600 mm and 300 kg, and an EF 68+ version for glass up to 52 mm.

Other GUTMANN systems

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

  • Facade · curtain wall

    GUTMANN F35 Slim

    Slim curtain wall for residential and high-end architecture with aluminium frames only 35 mm wide.

    Frame width
    35 mm
    Glass thickness
    up to 40 mm
    Panel size (H × W)
    up to 4 × 1.2 m (at 1.2 kPa wind)
    Panel height, G+4 building
    up to 3.45 m (at 1.5 kPa wind)
    Watertightness
    E1200
  • Facade · curtain wall · structural glazing

    GUTMANN F50/F60

    Mullion-transom curtain wall with a 50 or 60 mm face width; mullion and transom share one straight-cut profile, with structural-glazing, semi-SG and visual-SG versions.

    Face width
    50 or 60 mm
    Us
    0.9–1.5 W/m²K (DIN EN ISO 10077-2)
    Watertightness
    1500 Pa
    Wind load resistance
    Class C5
    Air permeability
    Class AE
  • Facade · semi-unitised curtain wall · structural glazing

    GUTMANN F50/F60 Staggered

    Semi-unitised curtain wall with a 50 or 60 mm face width, built on the same mullion-transom profiles as F50/F60, with structural-glazing, semi-SG and visual-SG versions.

    Face width
    50 or 60 mm
    Us
    0.76–1.8 W/m²K (DIN EN ISO 10077-2)
    Watertightness
    1000 Pa
    Wind load resistance
    Class C5
    Air permeability
    Class C4
  • Facade · semi-unitised curtain wall · structural glazing

    GUTMANN F80 CS

    Semi-unitised curtain wall of large glass units made and glazed in the factory, with glass-bead, SG and semi-SG appearance and optional GWD 70SK top-hung windows.

    Watertightness
    1000 Pa
    Wind load resistance
    Class C5
    Air permeability
    Class AE
  • Facade · unitised curtain wall

    GUTMANN Unitized Curtain Wall

    Unitised curtain wall of large glass units made and glazed in the factory and hoisted onto anchors on site, with optional GWD 70SK top-hung windows.

    Watertightness
    1000 Pa
    Wind load resistance
    Class C5
    Air permeability
    600 Pa
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 EF 68 does not fit

Units stop at 2600 × 3600 mm and 300 kg. A building with bays taller than 3600 mm, very wide bays or heavy acoustic glass beyond those limits needs a different solution. Like any unitised wall, it also needs repetition and hoisting access to make sense.

For units shaped or sized for the project, the GUTMANN Unitized curtain wall is designed with the supplier around the building.

GUTMANN Unitized Curtain Wall Consider instead GUTMANN Unitized Curtain Wall

Frequently asked questions

EF 68 takes glass 26–38 mm. EF 68+ has optimised insulators and gaskets and takes glass up to 52 mm.

Up to 2600 mm wide and 3600 mm high, with a unit weight up to 300 kg.

Yes, besides the glass-bead version EF 68 is offered as SG or semi-SG with a 10 mm butt joint, or 20 mm as an option.

Send the facade drawings on WhatsApp, we reply within 15 minutes. An engineer meets your team within 30 minutes, and units go into production after the shop drawing is approved.

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Dubai, Showroom

The Pinnacle Building, Sheikh Zayed Road, Office 607

Mon–Fri: 9:00 – 18:00

+971 50 220 6913

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Samples to see in person

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

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