GRM 485

Description
Characteristics
Downloads
Dimensions
Additional diagrams
Legend

Description

APPLICATION	DESIGN
Exhaust ventilation, heating and air conditioning networks in industrial, commercial and domestic premises.	Made of high-quality metal shape with polymer coating Polymer or anodized grille coating ensures weather-resistant properties. Shutters are made of PVC plactic. Non-standard sizes may be ordered.
MODIFICATION
Available modifications with an adapter (A) for connection to air ducts. Available modifications with versatile fixing (u) or with special springs (p) for fast mounting.

Characteristics

Parameter	GRM 485	Measurement unit
Form	Square	-
Material	metal shape with polymer coating	-
Adjustment	nonadjustable	-
Inner cross section size	400х400	mm

Files archieve

Downloads

Dimensions

Characteristics

Parameter	Value	Measurement unit
L	484	mm
L1	434	mm
L2	420	mm

Additional diagrams

Calculation formula		Correction factor К_p
ΔP_p = ΔP х К_p			0°	22°	45°
ΔP_p = ΔP х К_p		К_p	1	1.25	1.5

Calculation formula		Correction factor К
L_WA = L_WAO x K		S_ap [m²]	0.01	0.02	0.05	0.1	0.2	0.4
L_WA = L_WAO x K		K [dB(A)]	-9	-6	-3	0	+3	+6

Designation:

ΔP_p - pressure loss at various vane positions [Pa];
ΔP - pressure loss [Pa];
К_p – correction factor for pressure loss calculation depending on louvre deflection angle;
L_WA - sound power level [dB(A)];
L_WAO - sound power level for air pass 0,1 m² [dB(A)];
K - correction factor for sound power level calculation depending on air pass [dB(A)];
S_ap - air pass [m²];
V - rated speed [m/s].

Legend

VENTS GRM 485