Air Distribution · Install guide
Concentric Supply & Return Boxes
Supply/return concentric boxes for ceilings, rooftops, filters, dampers, exposed work, and multiple returns.
Air DistributionConcentric Boxes
Round concentric supply/return box
Concentric supply/return assembly · Ceiling
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Square concentric diffuser box
Concentric supply/return assembly · T-bar ceiling
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Concentric box with round supply inlet
Concentric supply/return assembly · Ceiling
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Concentric box with rectangular supply inlet
Concentric supply/return assembly · Ceiling
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Concentric box for rooftop unit drop
Concentric supply/return assembly · Ceiling below RTU
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Concentric box with filter return
Concentric supply/return assembly · Ceiling
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Concentric box with opposed-blade damper
Concentric supply/return assembly · Ceiling
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Concentric box in exposed ceiling
Concentric supply/return assembly · Open ceiling
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Concentric box with side return inlet
Concentric supply/return assembly · Shallow ceiling
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Concentric box with multiple return collars
Concentric supply/return assembly · Large ceiling zone
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