VNT Duct and Louvre

The VNT is an assembly which consists of the PHH75 louvre and a rectangular duct. The duct can have an optional damper and grille at the bottom. The PH Series is a range of roof mounting fixed Blade Louvre Housings suitable for air intake or discharge over ventilation shafts etc. PHH75 Comprises of 16 SWG Aluminium Louvres on 75mm Pitch with rear mounted Birdguard screen. Insect screens available as an optional extra.