Air Grilles for HVAC Systems

Round Ceiling Diffuser

The standard Polyaire Round Ceiling Diffuser is manufactured for long term strength and rigidity. It is fully adjustable by rotating the centre cone from total shutoff to fully open.

The standard colour is off-white, the outer surface is lightly etched to reduce reflection and fit unobtrusively with most decors. Available in 4 sizes, it allows for smooth quiet airflow that flows out in a concentric pattern across the ceiling, to provide good coverage in cooling and most heating applications.

Round Ceiling Diffuser - Plastic

Item #Nominal Neck Size (mm/inch)Face Size (mm/inch)
235384Ø150 / Ø6Ø265 / Ø10
237100Ø200 / Ø8Ø318 / Ø13
237101Ø250 / Ø10Ø390 / Ø15
237102Ø300 / Ø12Ø441 / Ø17

Round Ceiling Diffuser - Plastic Insulated

Item #Nominal Neck Size (mm/inch)Face Size (mm/inch)
235280Ø200 / Ø8Ø318 / Ø13
235281Ø250 / Ø10Ø390 / Ø15
235282Ø300 / Ø12Ø441 / Ø17

Aluminium Round Ceiling Diffuser - PA Plate

Item #Nominal Neck Size (mm/inch)Face Size (mm/inch)
245270Ø150 / Ø6Ø320 / Ø13
245271Ø200 / Ø8Ø412 / Ø16
245272Ø250 / Ø10Ø480 / Ø19
245273Ø300 / Ø12Ø550 / Ø22

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