A return and exhaust grille mounts flush to the ceiling plane utilizing a sheet metal back pan with a spin collar. A round flexible duct connects the back pan to a main return or exhaust duct, incorporating a round tap equipped with an integrated volume damper for airflow control. The flexible duct length is restricted to a five-foot maximum. An alternative routing condition shows the flexible duct weaving around a structural obstruction.
RETURN/EXHAUST DUCT ROUND TAP WITH VOLUME DAMPER ROUND FLEXIBLE DUCT WORK SEE PLANS FOR DIAMETER. 5 FOOT LENGTH MAX. CEILING RETURN/EXHAUST DUCT ROUND TAP WITH VOLUME DAMPER ROUND FLEXIBLE DUCT WORK SEE PLANS FOR DIAMETER. 5 FOOT LENGTH MAX. CEILING SHEET METAL BACK PAN WITH SPIN COLLAR. RETURN/EXHAUST GRILLE OBSTRUCTION SHEET METAL BACK PAN WITH SPIN COLLAR. RETURN/EXHAUST GRILLE GENERAL NOTES:
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