We can supply Window Sills (Granite Window Sills, Granite Threshold) as per your customized requirements. Material:natural granite,marble,quartz stone,etcRegular Size: ... , Maple Red, China Porino, Absolute Black, China Green, G439, Sand Wave, Tan brown, Black Galaxy, Blue Pearl, Emerald Pearl, ... , tiles, tombstones, kerbstones, cube stones, etc. Window Sills (Granite Window Sills, Granite Threshold)