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  • metal ceilings defined
    • types of metal ceilings
    • suspension
    • clip-in
    • lay-in
    • linear grid
    • tartan grid
    • rafts and modules
  • specification criteria
    • acoustic comfort
    • design aesthetics
    • accessibility and maintenance
    • paint finish
    • integration
    • prefabrication
    • installation
    • product sustainability
    • fire performance
    • quality standards
  • sector criteria
    • commercial
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    • controlled environments
  • metal ceiling systems
    • system overview
    • system 120
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    • system 205
    • system 330
    • system 600
    • tubeline
    • trucell
    • bespoke ceilings
    • chilled ceilings
    • Integrated Service Modules (ISM)
  • perforation patterns
    • perforations overview
    • square pitch perforations
    • diagonal pitch perforations
    • oblong and square perforations
    • designer pitch perforations
    • perforation integration
  • trims and perimeters
    • trims and perimeters overview
    • trims compatibility table
    • channel trims
    • angle trims, open cell and fibre
    • metal tile to plasterboard trims
    • bulkhead trims and tee sections
    • system 130 to plasterboard trims
    • blind box trims
    • dry lining trims
    • radiused trims defined
    • trims & perimeters silhouettes
    • trim accessories
  • component listings
    • emac components
    • system 120
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    • tubeline
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  • installation advice
    • system 120
    • system 130
    • system 150
    • system 200
    • system 205
    • system 330
    • tubeline
    • trucell
    • estimating quantity guide

• 
  • partitioning systems
    • system 2000
    • system 3000 / 4000
    • system 5000
    • system 7000
    • system 8000
  • doors
    • SAS door service
    • veneer production
    • veneer finishes overview
    • cpl & standard veneers
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    • vision panels & DDA
    • door frames & handing
    • environmental & quality

• 
  • chilled ceilings
  • chilled beams
  • ISMs - Integrated Service Modules
  • radiant heating panels
  • trench heating
  • perimeter heating
  • project management

• 
  • product overview
  • bespoke ceilings
  • acoustic baffles
  • service binnacles
  • bulkheads
  • column casings
  • linear grilles
  • service gantries
  • solar management
  • spandrel panels
  • wall panelling

Oblong and Square Perforation Patterns

OB20		OB25
Ø1.5 x 7mm, 20% Open Area		Ø2.0 x 14mm, 25% Open Area
OB50		S.1147
Ø4.5 x 21mm, 50% Open Area		*11.0mm, 47% Open Area

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