Home / Ducting / PVC Grilles & Diffusers / Low Resistance Louvred Grille Low Resistance Louvred Grille £14.04 – £33.60 DUCTMASTER PVC low resistance louvred grille without flyscreen. Available in 2 sizes Size Choose an option100mm150mm Clear Low Resistance Louvred Grille quantity Add to basket SKU: N/A Categories: Ducting, PVC Grilles & Diffusers Tag: PVC Grilles & Diffusers Product ID: 10446