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Curtain walls · Thermal break options

SY35

Slim stick curtain wall.

The SYKON Superior SY35 is a 35 mm slim stick curtain wall system for conventional façade applications with a reduced sightline profile. Provides slender appearance while maintaining structural performance, allowing integration of top-hung windows, operable vents, and integrated façade door systems.

35mm

Sight line

190mm

Mullion depth, maximum

155kg

Vent weight, maximum

3000Pa

Wind, safety · ASTM E330

SY35 with top-hung window
  • 35 mm sight line
  • Mullion depth 60 to 190 mm
  • Two-level EPDM sealing
  • Glazing up to 50 mm

01 · Overview

Product overview.

~40% less aluminium width than standard systems. Mullion depth range 60 to 190 mm with maximum inertia up to Ix = 480.43 cm⁴. Supports glazing up to 50 mm with Uf = 1.3 to 3.3 W/m²K thermal performance.

02 · Specifications

Technical specifications.

Technical Specifications

Sightline Width
35 mm
Aluminium Alloy
EN AW 6063
Mullion Depth Range
60 to 190 mm
Max Inertia
Ix = 480.43 cm⁴
Glazing Type
Single/Dbl/Triple
Max Glazing
Up to 50 mm
Sealing
Two-Level EPDM

Certifications & Performance

Air Infiltration, ASTM E283
600 Pa
Water (Static), ASTM E331
1200 Pa
Wind (Serviceability), ASTM E330
2000 Pa
Wind (Safety), ASTM E330
3000 Pa
Thermal (Uf)
1.3 to 3.3 W/m²K
Powder Coating
Min. 75 microns

03 · Performance

Performance notes.

3000Pa

Wind, safety · ASTM E330

Water tightness 1200 Pa, ASTM E331.

04 · Configurations

Opening types.

  • Parallel Projected Outward
  • Parallel Projected Inward
  • Top-Hung Vent
  • Captured Glazing
  • Projected Inward
  • Tilt & Turn Vent

05 · Profiles

Profile range.

Profiles as listed in the 2026 catalogue.

Mullion Profiles

ProfileDepth
P 135 06060 mm
P 135 100100 mm
P 135 135135 mm
P 135 142142 mm
P 135 190190 mm
P 135 192192 mm

Transom Profiles

ProfileDepth
P 135 06666 mm
P 135 106105.5 mm
P 135 141140.5 mm
P 135 196195.5 mm

06 · Details

Details and highlights.

Reinforcement Options

Profile RangeReinforcement
Small depth profilesInsert tube 85 × 30 mm
Medium depth profilesInsert tube 120 × 30 mm
Large depth profilesInsert tube 175 × 30 mm
AlternativeMullion aluminium sleeves

Thermal Break Options

TypeSize
T15041010 mm
T15041515 mm
T15042020 mm
T15042626 mm
T15043232 mm
T15043838 mm
T15044444 mm

Glazing Range

ConfigurationThickness
Single glazingStandard
Double glazingStandard
Triple glazingSupported
MaximumUp to 50 mm

Friction Hinge Capacities (Operable Vents)

Arm (mm)Max H (mm)Max W (mm)Max kg
261700120050
317800120060
3531000130069.5
4141200140088.5
45814001400102
51116001500135
55617001500137
60218001500139
70720001500155

07 · Downloads

Specify SY35.

Request the documents for this system. We send them by email, usually with a contact in our engineering team.

09 · Quote

Request a quote for SY35.

Send the project details and we reply with a proposal.

Your request goes by email to our sales team.

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