GRC

Circular egg crate grille for extract air and wall/ceiling mounting

Extract air
91% free area
Manages large air flows
Cleanable
Can be used with the ALS commissioning box
Standard colour White RAL 9003
- 5 alternative standard colours
- Other colours upon request

Functions
- Aria di ripresa
- Aria di trasferimento

Calculate with your requirements

Design

Material and surface treatment

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.

Standard colour:
- RAL 9003, signal white, gloss 40
Alternative standard colours:
- RAL 9006, white aluminium, gloss 80
- RAL 9007, grey aluminium, gloss 80
- RAL 9010, pure white, gloss 40
- RAL 9005, jet black, gloss 35
- RAL 7037, dusty grey, gloss 30
Non-painted finish and other colours available on request.

AIR FLOW - SOUND PRESSURE ROOM (Lp10A) *)
GRC Size		25 dB(A)		30 dB(A)		35 dB(A)
GRC Size		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)
GRC Size	ALS Size	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.

ALS

Commissioning box for air diffusers

Filter

Include Accessory documents

Document	Article	Document type	Date
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

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