Officers in this status are considered by the board to be in-zone. Officers may review ref (b) and their eligibility for the board on the internet at the officer promotion homepage. The senior and junior officers in-zone and the junior officer eligible below-zone are as follows (Encl (2) of ref. (b) applies): 2.a.
duplex - a house with two units sharing a common wall. duplex house, semidetached house. house - a dwelling that serves as living quarters for one or more families; he has a house on Cape Cod; she felt she had to get out of the house. duplex apartment. apartment, flat - a suite of rooms usually on one floor of an apartment house.
Halifax defines Duplex Dwelling as the whole of a dwelling that is divided horizontally into two separate dwelling units, each of which has an independent entrance. Other major cities use the term duplex, but for dwelling units. Dallas defines the term duplex as two dwelling units located on a lot.