Intumescent Grilles for Fire Doors.
All intumescent fire grilles are tested to BS 476: Part 22 1987 and EN 1634: Part 2.
A durable ventilation grille which is easily mounted in fire doors, & solid block walls, and can provide in excess of 60 Minutes fire rating.
Suitable for mounting up to 1,000mm (1m) from floor level.
Comprising of an intumescent slated core within a galvanized steel frame with vermin proof mesh fitted to both faces.
The design allows a free area of 80% approximately - see our table below for guidance
Maximum grille size is 600mm² or equivalent area, or use a combination of grilles up to a maximum size of 1500 x 1000mm.
Circular grilles are available in 100, 125, 150, 200, 225, 250, 300, 350 and 400mm diameter sizes.
Vermin proof mesh
Fire Tests:
Warrington Fire Research: Global Assessment C100767
Chiltern International Fire: FEA/F96117
Trada/Chiltern: RF95041
LOUVERED COVER PLATES:
We can supply steel Louvered Cover Plates (Air Transfer Plates) manufactured from a robust fabricated 2Oswg mild steel matched to the appropriate fire grille dimensions.Cover plates have a Satin Anodised Aluminium appearance.
Free Area Table: Intumescent Grilles. Top row is width dimension. First column is Height dimension. Sizes in mm
|
|
100
|
150
|
200
|
225
|
250
|
300
|
350
|
400
|
450
|
500
|
550
|
600
|
| 100 |
80cm2
|
120cm2
|
160cm2
|
180cm2
|
200cm2
|
240cm2
|
280cm2
|
320cm2
|
360cm2
|
400cm2
|
440cm2
|
480cm2
|
| 150 |
180cm2
|
240cm2
|
270cm2
|
300cm2
|
360cm2
|
420cm2
|
480cm2
|
540cm2
|
600cm2
|
660cm2
|
720cm2
|
|
| 200 |
320cm2
|
360cm2
|
400cm2
|
480cm2
|
560cm2
|
640cm2
|
720cm2
|
800cm2
|
880cm2
|
960cm2
|
||
| 225 |
405cm2
|
450cm2
|
540cm2
|
630cm2
|
720cm2
|
810cm2
|
900cm2
|
990cm2
|
1080cm2
|
|||
| 250 |
500cm2
|
600cm2
|
700cm2
|
800cm2
|
900cm2
|
1000cm2
|
1100cm2
|
1200cm2
|
||||
| 300 |
720cm2
|
840cm2
|
960cm2
|
1080cm2
|
1200cm2
|
1320cm2
|
1440cm2
|
|||||
| 350 |
980cm2
|
1120cm2
|
1260cm2
|
1400cm2
|
1540cm2
|
1680cm2
|
||||||
| 400 |
1280cm2
|
1120cm2
|
1600cm2
|
1760cm2
|
1920cm2
|
|||||||
| 450 |
1620cm2
|
1800cm2
|
1980cm2
|
2160cm2
|
||||||||
| 500 |
2000cm2
|
2200cm2
|
2400cm2
|
|||||||||
| 550 |
2420cm2
|
2640cm2
|
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| 600 |
2880cm2
|
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| Calculations made using 80%(approx) free area. Please note that this table does not allow for the effects of fitting any of the Fire Grille Face Plates, or any other type of aesthetically pleasing cover over the fire grille. | ||||||||||||
