RENSON^® HEADQUARTERS
Industriezone 2 Vijverdam • Maalbeekstraat 10 • B-8790 WAREGEM
Tel +32 56 62 71 11 • Fax +32 56 60 28 51

Louvres

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» Calculationprogram Flow - Louvres (.XLS) *New version V7.0*

Built-in wall louvres
		Physical free area	Visual free area
411	Wall louvre, standard series	43 %	59 %
411R	Round built-in louvre (with frame)	43 %	59 %
412	Wall louvre with chevron section blades	39 %	93 %
412R	Round wall louvre with chevron section blades	39 %	93 %
421	Wall louvre, heavy-duty series	49 %	70 %
421R	Round louvre (with frame)	47 %	70%
422	Wall louvre with chevron section blades, heavy-duty series	43 %	59 %
451	Wall louvre, heavy-duty series	46 %	70 %
452	Wall louvre, heavy-duty series with chevron section blades	41 %	70 %
453	Wall louvre, heavy-duty series, with coil blades	55 %	69 %
480	Wall louvre, heavy-duty series, high-airflow	76 %	90 %
481	Wall louvre, heavy-duty series	60 %	70 %
425	Wall louvre, extra-heavy-duty series	49 %	86 %
427	Wall louvre, extra-heavy-duty series, with adjustable blades	53 %	86 %
491	Storm wall louvre	26 %	57 %
511	Wall louvre, standard series galvanised steel	43 %	61 %
521	Wall louvre, heavy-duty series galvanised steel	47 %	68 %
621	Wall louvre, heavy-duty series stainless steel	47 %	68 %

Surface mounted grilles
		Physical free area	Visual free area
431	Surface-mounted wall louvre	43 %	59 %
431R	Round louvre (without frame)	45 %	58 %
432	Surface mounted louvre with frame	43 %	59 %
433	Pressure-relief damper	-	-

Glazed-in louvres
		Physical free area	Visual free area
414	Glazed-in louvre	43 %	59 %
414R	Round glazed-in louvre	45 %	58 %
414VA	Controllable glazed-in louvre	-	-
414THF	Thermally insulated glazed-in louvre	-	-
415	Glazed-in louvre, with chevron section blades	39 %	93 %
415R	Round glazed-in louvre, with chevron section blades	39 %	93 %
415VA	Controllable glazed-in louvre, with chevron section blades	-	-
424	Glazed-in louvre, heavy-duty series	49 %	70 %
428	Glazed-in louvre, with chevron section blades, heavy-duty series	43 %	59 %
425GL	Glazed-in louvre, extra-heavy-duty series	49 %	86 %
427GL	Louvre, extra-heavy-duty series, with adjustable blades	53 %	86 %
483	Glazed-in louvre, heavy-duty series, high-airflow	76 %	90 %
484	Glazed-in louvre, heavy-duty series	60 %	70 %
327/1	Louvre with glass blades, single glazing	-	-
327/2	Louvre with glass blades, double glazing	-	-
494	Glazed-in storm louvre	26 %	57 %

Burglar-proof wall louvres
		Physical free area	Visual free area
423	Burglar-proof wall louvre	37 %	70 %

Acoustic louvre
		Physical free area	Visual free area
445/86	Acoustic louvre	34 %	77 %
446/150	Acoustic louvre	35 %	77 %
445/300	Acoustic louvre	35 %	77 %
445B	Interior acoustic louvre	-	-
461AK Silendo^®	Acoustic door grille	27 %	27 %
468AK/1	Acoustic silencer for louvres	29 %	29 %
468AK/2	Acoustic silencer for louvres	29 %	29 %
469 Invisido^®	Discrete grille above door	-	-

Punched grilles
		Physical free area	Visual free area
435	Punched grille	-	-
435R	Round built-in punched grille	-	-

Ventilation grilles
		Physical free area	Visual free area
381	Built-in ventilation grille	-	-
382	Flat surface-mounted ventilation grille	-	-

Floor Grilles
		Physical free area	Visual free area
311	Convector grille	-	-
371	Floor grille, heavy-duty series	-	-

Linear bar grilles
		Physical free area	Visual free area
392	Linear bar grille	-	-
393	Linear bar grille, with deflection	-	-
394	Linear bar grille, self-assembly	-	-

Fire-resistant louvre
		Physical free area	Visual free area
464 Incendo^®	An innovative aesthetic fire-resistant louvre with sightproof chevron section blades.	51 %	61 %
465	Fire-resistant louvre, with angled blades	57 %	74 %
466	Fire-resistant louvre, with horizontal blades	70 %	70 %

Extraction louvres

XD1	Stylish extraction louvress	152 x 152 mm
XD2	Stylish extraction louvres	188 x 188 mm
XD3	Stylish extraction louvres	233 x 233 mm

Louvre box

440	Turret

Insect mesh

401	emovable Insect Mesh