Round Ceiling Diffuser
AdjustableRCD-A
The Polyaire Round Ceiling Diffusers provide an alternative to the conventional square diffusers for both ceiling supply and extract applications.
Adjustment of the air pattern is achieved by screwing the core in or out of the outer frame. The core can be removed by unscrewing it completely
Manufactured from spun aluminium throughout, with centre threaded boss within the neck to facilitate core adjustment
Standard colour is RAL 9010. Alternative colours are available so suit the interior requirements.
Vertical Air Pattern Horizontal Air Pattern
Dimensions
| Size (mm) | Neck (A) | Face (B) | Height (H) |
| 150 | 150 | 336 | 105 |
| 200 | 200 | 423 | 118 |
| 250 | 250 | 517 | 130 |
| 300 | 300 | 640 | 146 |
| 350 | 350 | 730 | 185 |
Order Selection
| Item # | Description |
| 220150 | 150mm Round Ceiling Diffuser - Adjustable (152mm Ø Neck / 335mm Ø Face) |
| 220200 | 200mm Round Ceiling Diffuser - Adjustable (200mm Ø Neck / 423mm Ø Face) |
| 220250 | 250mm Round Ceiling Diffuser - Adjustable (250mm Ø Neck / 517mm Ø Face) |
| 220300 | 300mm Round Ceiling Diffuser - Adjustable (300mm Ø Neck / 640mm Ø Face) |
| 220350 | 350mm Round Ceiling Diffuser - Adjustable (350mm Ø Neck / 730mm Ø Face) |
Technical Data
| Size (mm) | Volume (m³/h) | Spread Radius | Throw | Noise dB (A) H | Noise dB (A) V |
| 150 | 127 | 0.6 | 1.4 | <20 | <20 |
| 159 | 0.7 | 1.6 | <20 | <20 | |
| 191 | 0.8 | 1.9 | <20 | 20 | |
| 223 | 0.9 | 2.1 | 25 | 26 | |
| 255 | 1.0 | 2.4 | 29 | 30 | |
| 288 | 1.1 | 2.8 | 32 | 34 | |
| 318 | 1.2 | 3.1 | 35 | 36 | |
| 382 | 1.3 | 3.6 | 39 | 41 | |
| 200 | 226 | 0.8 | 1.5 | <20 | <20 |
| 283 | 0.9 | 1.8 | <20 | <20 | |
| 339 | 1.1 | 2.2 | <20 | 21 | |
| 396 | 1.2 | 2.5 | 26 | 27 | |
| 452 | 1.3 | 2.8 | 30 | 31 | |
| 508 | 1.5 | 3.1 | 34 | 35 | |
| 565 | 1.7 | 3.5 | 36 | 38 | |
| 678 | 1.8 | 4.1 | 40 | 42 | |
| 250 | 353 | 0.9 | 1.7 | <20 | <20 |
| 442 | 1.1 | 2.3 | <20 | <20 | |
| 530 | 1.3 | 2.7 | 21 | 23 | |
| 619 | 1.5 | 3.2 | 27 | 29 | |
| 707 | 1.7 | 3.6 | 31 | 33 | |
| 795 | 1.8 | 4.0 | 35 | 36 | |
| 884 | 2.0 | 4.5 | 38 | 40 | |
| 1060 | 2.2 | 5.2 | 43 | 45 | |
| 300 | 509 | 1.1 | 2.2 | <20 | <20 |
| 636 | 1.3 | 2.6 | <20 | <20 | |
| 763 | 1.5 | 3.2 | 23 | 25 | |
| 1583 | 2.3 | 5.6 | 31 | 33 | |
| 1809 | 2.5 | 6.3 | 35 | 37 | |
| 2036 | 1.7 | 7.2 | 38 | 40 | |
| 2262 | 2.9 | 8.1 | 41 | 43 | |
| 2714 | 3.2 | 9.6 | 45 | 48 | |
| 350 | 693 | 1.2 | 2.6 | <20 | <20 |
| 866 | 1.4 | 3.2 | <20 | <20 | |
| 1039 | 1.6 | 3.8 | 24 | 27 | |
| 2004 | 2.5 | 6.5 | 33 | 35 | |
| 2290 | 2.8 | 7.5 | 36 | 39 | |
| 2576 | 3.0 | 8.5 | 40 | 43 | |
| 2863 | 3.3 | 9.5 | 43 | 45 | |
| 3435 | 3.7 | 11 | 47 | 50 |