Perimeter Trims

NCS’ range of standard perimeter and transition trims are designed to be used alongside the GT Ultimate exposed grid system, in both 15 and 24mm face widths. All trims are extruded in aluminium alloy, ensuring a sharp, clean edge detail; and finished in a corrosion-resistant white powder coat, to match in with ceiling grid. The trims are available in stock from our well-established network of National Ceiling Systems distributors across the country.

The versatile trims can be used in the following scenarios:

  • Creating a plain, square perimeter for a suspended ceiling
  • Creating a shadowline detail around a suspended ceiling perimeter
  • Transitioning between plasterboard and suspended grid ceiling
  • Ensuring a neat finish with a plasterboard bulkhead


Grid to plasterboard transition trim GSF-FF
Wall angle for plasterboard GSF-SU
Bulkhead trim GKLBH
Aluminium wall angle GAST
Shadowline aluminium wall angle GASL
Budget shadowline aluminium wall angle GWSL