Internal Partition

KSW 120 Shaftwall System

Specification Assistance

Know more about our indoor drywall systems.

Lighter shafts. Faster floors. Certified fire protection.

Knauf Shaftwall lines lifts, stairwells and service risers entirely from the accessible side — up to 90% lighter than traditional shaftwalls, installed floor-by-floor with no scaffolding, and certified for the fire performance high-rise buildings demand.

Unlike a conventional partition, the system is built entirely from the accessible (corridor/room) side — the shaft-facing board is installed first into a proprietary framing system, and the framework is then built outward toward the installer.

Product Variants and Performances

ASTM Boards

CT 64mm (0.9mm) Stud at 609mm c/c - L/240 @240Pa

Product

Height

Fire Resistance Performance (in mins)

Sound Insulation (db)

Duty Rating

System Thickness (mm)

System Weight (kg/m2)

2 x 15.9mm GW-TX (Fire Resistant)

4550

120

49

Severe

95.8

51.70

CT 102mm (0.9mm) Stud at 609mm c/c - L/240 @240Pa

Product

Height

Fire Resistance Performance (in mins)

Sound Insulation (db)

Duty Rating

System Thickness (mm)

System Weight (kg/m2)

2 x 15.9mm GW-TX (Fire Resistant)

5900

120

51

Severe

133.8

52.8

CT 152mm (0.9mm) Stud at 609mm c/c - L/240 @240Pa

Product

Height

Fire Resistance Performance (in mins)

Sound Insulation (db)

Duty Rating

System Thickness (mm)

System Weight (kg/m2)

2 x 15.9mm GW-TX (Fire Resistant)

7840

120

53

Severe

183.8

54.24

BS EN Boards

CT 64mm (0.9mm) Stud at 600mm c/c - L/240 @200Pa

Product

Height

Fire Resistance Performance (in mins)

Sound Insulation (db)

Duty Rating

System Thickness (mm)

System Weight (kg/m2)

2 x 15mm Knauf Fire Resistant Board

4550

120

49

Severe

95.8

51.90

CT 102mm (0.9mm) Stud at 600mm c/c - L/240 @200Pa

Product

Height

Fire Resistance Performance (in mins)

Sound Insulation (db)

Duty Rating

System Thickness (mm)

System Weight (kg/m2)

2 x 15mm Knauf Fire Resistant Board

5900

120

51

Severe

133.8

53

CT 152mm (0.9mm) Stud at 600mm c/c - L/240 @200Pa

Product

Height

Fire Resistance Performance (in mins)

Sound Insulation (db)

Duty Rating

System Thickness (mm)

System Weight (kg/m2)

2 x 15mm Knauf Fire Resistant Board

7840

120

53

Severe

183.8

54.44

Looking for a different system?

Speak to our team to discuss specific products and solutions, or go back to our Systems.