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18RD Duck Size, Flush Mount Concentric Diffuser System
- RSI's 510 SERIES concentric diffuser systems are designed to provide a single point air distribution system. The systems may be used with either a T-Bar ceiling or a plaster ceiling.
- Standard features include:
- All Aluminum diffuser with aluminum return air egg crate.
- Built-in Anti-Sweat gasket.
- Molded Fiberglass Transition (through five tons).
- Built-in hanging supports.
- Diffuser box constructed of fiberglass duct board (through 7.5 tons) or sheet metal.
- Standard benefits include:
- Even four way airflow.
- Factory assembled & sealed.
- Guaranteed not to "sweat".
- Guaranteed not to recirculate air flow (short cycle).
- Return air egg crate is easily removed.
- Units are fully insulated (both supply and return).
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