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Term
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Description
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T Bar
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This refers to the metal rails used in
a suspended ceiling as commonly used in offices. A ceiling
panel (or part panel) is removed and a T bar fitting is placed
on the rails with the flat panel diffuser flush with the ceiling.
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T Bar Spacing
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Standard spacing is 2.4 x 2.4m. This will
give an initial lux reading of about 500 in a typical office.
Spacing at 2.4 x 1.8 is also used especially if silver tint
diffusers are involved.
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Recessed Plaster
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This refers to any solid ceiling that can
have an opening cut into it for recessing a fitting. The fitting
has a trim around the edges so that the ceiling opening is
covered. The flat panel diffuser is flush with the ceiling.
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Surface Mount
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This is a shallow rectangular box construction
that is attached to the ceiling. There are prismatic panel
models and aluminium louvered low brightness models.
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