Door type and colour: Yale YLP44-06/03-CP Letterplate in White is suitable for PVCu and Composite doors and ensures clear access for posting mail Energy efficient: External foam seal increases weather protection and internal brushes reduce air filtration and prevent heat loss Easy to fit: The adjustable telescopic sleeves and the supplied fixings ensure a quick fit. Fully sprung flaps with thump handles for ease of use Weather resistance: The letterbox has a UV stable finish meaning harmful UV rays won't fade the colour over time and is corrosion resistant Dimensions and door size: The length of the letterplate is 12'' (300mm), with a 147° opening and fits doors with 38-78mm thickness