989 5-3/4" X 22" Box Newel Sleeve. Fits any wood 4-3/4" blanks or the 993 box newel posts. Sleeve wall is 1/2" thick. This sleeve is popular with carpenters installing on 6" wall caps, or with builders that want a larger newel but don't have the room.
Available in Red Oak, Hard Maple, White Oak, Euro Beech, Poplar and Alder hardwoods.