These grilles are manufactured from grey synthetic louvres filled with intumescent material. At a temperature of 120° Celsius the louvres swell to many times the original thickness and fuse together to form a non-combustible barrier. Gaps between the grille and surround should be filled with fire resistant mortar or intumescent mastic. Free-air space approx. 86%.
Application
These grilles allow free movement of air through ducts and fire rated constructions whilst providing full protection against the passage of hot gases smoke and flames. In effect the grilles act as a static fire barrier. The grilles are not suitable for outside use. This application is detailed in section G8HP.
Standard
- horizontal louvres.
- dimensions, height/width multiple of 25 mm.
- 60 min. fire resistant by EN1634-1.
- fitting instructions.
Options
- other dimensions, min. 75x75 mm, max. 600x600 mm.
- available with frame, see G8H.
Technical details
| Article number | : | G8HB-5020 |
| Specification | : | grey louvres |
| Build in | : | 498 x 198 mm |
| EAN code | : | 8713628214217 |
| Box Qty | : | 1 |
| Weight gramm | : | 1870 |
| LD cm2 | : | 760 |
| Pressure drop | 1 Pa | 2 Pa | 5 Pa | 10 Pa | 20 Pa | 40 Pa | 60 Pa |
| dm3/s | 63 | 89 | 141 | 199 | 282 | 398 | 488 |
| m3/u | 227 | 320 | 508 | 716 | 1015 | 1433 | 1757 |
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