Klober's 3-in-1 Eaves Vent Pack provides a simple and economic solution to eaves ventilation by providing all the necessary components required in one pack. Packs are available for continuous eaves ventilation of 10,000mm/m and 25,000mm/m. A complete 6m pack comprises of Fascia Vents, Roll Out Rafter Tray and Underlay Support Tray.DimensionsUnderlay Support Tray: 265mm Wide25mm Vent (FV25): 1m/500mm x 38mm Wide x 38mm DeepRoll Out Rafter Tray: 6m x 300mm WideWeight: 2.8kgFeatures and Benefits Suitable for both new build and re-roofing applications. 450mm and 600mm rafter centres Underlay support tray prevents ponding behind the gutter. This product satisfies NHBC requirements and complies with BS5250:2000MaterialsRafter Tray and Underlay Support Tray: PVCFascia Vent: Polypropylene