740X610 O/A NON VISION DOOR TRANSFER GRILLE COMPLETE WITH BACKING FRAME
Model Series 51DG offers the largest free area possible (average > 50%) with a completely sight-proof design, utilising an inverted ‘V’ shaped louvre on 20mm centres.
Widely used for not only in doors and partitions, but also in place of conventional exhaust and return grilles where it is important that the interior of the plenum or duct be concealed. The inverted-V blades not only block vision, but also provide strength.
The 51DG durability assures good looks and long service. Screw holes in the frame are countersunk for smooth appearance after installation.