The GRC is supplied with push-in connection and without screw holes.
The raster grille is made of aluminium with an outer frame of cold-rolled sheet steel, these parts are finished. The duct connection sleeve is made of zinc plated sheet steel.
| AIR FLOW - SOUND PRESSURE ROOM (Lp10A) *) | ||||||||
| GRC Size | 25 dB(A) | 30 dB(A) | 35 dB(A) | |||||
| l/s | m3/h | l/s | m3/h | l/s | m3/h | |||
| 100 | 29 | 104 | 35 | 126 | 42 | 151 | ||
| 125 | 45 | 162 | 53 | 191 | 63 | 227 | ||
| 160 | 69 | 248 | 80 | 288 | 94 | 338 | ||
| 200 | 106 | 382 | 123 | 443 | 142 | 511 | ||
| 250 | 156 | 562 | 181 | 652 | 209 | 752 | ||
| 315 | 238 | 857 | 275 | 990 | 319 | 1148 | ||
| 400 | 345 | 1242 | 407 | 1465 | 480 | 1728 | ||
| 500 | 494 | 1778 | 590 | 2124 | 703 | 2531 | ||
| 630 | 752 | 2707 | 895 | 3222 | 1065 | 3834 | ||
| *) Lp10A = Sound pressure incl. A-filter with 4 dB room attenuation and 10 m2 room absorption area. The table shows data for fully open damper position. | ||||||||
| GRC Size | ALS Size | 25 dB(A) | 30 dB(A) | 35 dB(A) | ||||
| l/s | m3/h | l/s | m3/h | l/s | m3/h | |||
| 100 | 80-100 | 21 | 76 | 25 | 90 | 30 | 108 | |
| 125 | 100-125 | 31 | 112 | 37 | 133 | 44 | 158 | |
| 160 | 125-160 | 42 | 151 | 51 | 184 | 61 | 220 | |
| 200 | 160-200 | 63 | 227 | 76 | 274 | 92 | 331 | |
| 250 | 200-250 | 101 | 364 | 121 | 436 | 145 | 522 | |
| 315 | 250-315 | 165 | 594 | 198 | 713 | 237 | 853 | |
| 400 | 315-400 | 265 | 954 | 312 | 1123 | 367 | 1321 | |
| 500 | 400-500 | 406 | 1462 | 476 | 1714 | 559 | 2012 | |
| 630 | Size 630 does not have any commissioning box | |||||||
| *) Lp10A = Sound pressure incl. A-filter with 4 dB room attenuation and 10 m2 room absorption area. The table shows data for fully open damper position. | ||||||||
| Document | Article | Document type | Date | Download |
|---|---|---|---|---|
| Building product declaration (pdf 43.14kB) | GRCa | Quality | 24/05/2018 | |
| Circular egg crate grille for transfer/extract air (pdf 591.73kB) | GRCb | Technical catalogue | 23/11/2021 | |
| Building product declaration (pdf 42.03kB) | GRCa | Quality | 24/05/2018 | |
| Installation, commissioning, maintenance (pdf 464.31kB) | GRCb | IOM Manual | 01/10/2021 | |
| Transfer air solutions (pdf 970.08kB) | ALS, CLA-A, GRC, SOTTO | Brochure | 06/11/2023 | |
| Product description - Air diffusers & dampers (pdf 249.19kB) | Air diffusers & dampers | IOM Manual | 19/10/2023 | |
| Overview - Air diffusers (pdf 4.28MB) | Air diffusers | Brochure | 21/02/2025 | |
| Commissioning guide - Air diffusers, VAV/CAV- & Commissioning dampers (pdf 7.73MB) | Air diffusers, VAV/CAV- & Commissioning dampers | IOM Manual | 27/02/2025 | |
| Nano certificate (pdf 71.51kB) | Air diffusers | Quality | 03/10/2023 |
Whilst we have made every effort to ensure information on this website is up to date and accurate, the technical specification and availability of products/services listed on this website may vary market to market and are subject to change without notice. Please contact your regional representative or visit your local website for further details.