Structural Engineering / Housing Technology | A

Reliability – Responsibility – Sustainability
For over 30 years, we have manufactured fire protection boards from materials which pose no harm to health.

Reliability – Responsibility – Sustainability
For over 30 years, we have manufactured fire protection boards from materials which pose no harm to health.

THERMAX® is always the first choice when it comes to using process-friendly and sustainable fire protection solutions in housing technology and structural engineering.

Special case, with additional isolation.

Constructions with THERMAX® SL fire protection boards under ETA - 11/0083 SINTEF (06/2018) for:

Ventilation ducts – self supporting ➔ EI 60, EI 90, EI 120
Ventilation duct with internal sheet steel duct ➔ EI 90
Smoke extraction duct ➔ EI 60, EI 90, EI 120
Installation channels and shafts ➔ EI 60, EI 90, EI 120

The boards for fire protection in housing technology: THERMAX® SL

THERMAX® SL: Ventilation ducts – self supporting

DesignationClassificationMaterial thicknessDuct dimensionsOperating pressure
L2060EI 60 (ve ho o ↔ i) S1 x 35 mm≤ 1250 x 1000 mm (WxH) cross-section± 500 Pa
L2090EI 90 (ve ho o ↔ i) S1 x 45 mm≤ 1250 x 1000 mm (WxH) cross-section± 500 Pa
L2120EI 120 (ve ho o ↔ i) S1 x 55 mm≤ 1250 x 1000 mm (WxH) cross-section± 500 Pa

Single-skinned, 4-sided ventilation duct with a fire resistance time of 60, 90 or 120 minutes.
Larger duct dimensions are available.

Tested under EN 1366-1


THERMAX® SL: Ventilation duct with internal sheet steel duct

DesignationClassificationMaterial thicknessDuct dimensionsOperating pressure
L1090EI 90 (ve ho o ↔ i) S1 x 45 mm≤ 1250 x 1000 mm (WxH)
steel duct, cross-section
± 500 Pa

Single-skinned, 4-sided ventilation duct as a fire protection coating for ventilation ducts made of steel sheets, for a fire resistance time of 90 minutes.

Tested under EN 1366-1


THERMAX® SL: Smoke extraction duct

DesignationClassificationMaterial thicknessDuct dimensionsOperating pressure
L3060EI 60 (ve-ho) 500 multi1 x 35 mm≤ 1250 x 1000 mm (WxH) cross-section ± 500 Pa
L3090EI 90 (ve-ho) S 500 multi1 x 45 mm≤ 1250 x 1000 mm (WxH) cross-section -1500/+500 Pa
L3120EI 120 (ve-ho) S 1500 multi1 x 55 mm≤ 1250 x 1000 mm (WxH) cross-section -1500/+500 Pa

Ventilation ducts, independent single-skinned, 4-sided ventilation duct with a fire resistance time of 60, 90 or 120 minutes.
Larger duct dimensions are available.

Tested under EN 1366-8


THERMAX® SL: Installation channels and shafts

DesignationClassificationMaterial thicknessDuct dimensions-
I1060EI 60 (ve ho o ↔ i)1 x 35 mm200 x 200 mm – 1250 x 1000 mm-
I1090EI 90 (ve ho o ↔ i)1 x 45 mm200 x 200 mm – 1250 x 1000 mm-
I1120EI 120 (ve ho o ↔ i)1 x 55 mm200 x 200 mm – 1250 x 1000 mm-

Single-skinned, 4-sided installation channels and shafts with a fire resistance time of 60, 90 or 120 minutes. For all standard installations, with the exception of cable routes.

Tested under EN 1366-5