Abstract: An aircraft guidance light fixture housing for aircraft runways and taxiways includes a generally cylindrical rotationally molded plastic canister or housing member having an intermediate cylindrical wall section which is of an outer diameter slightly less than the inner diameter of the remaining wall sections of said housing member whereby the housing member may be cut in predetermined spaced apart positions to remove a portion of the housing member and permit telescoping one of the remaining sections into the other remaining section. The overall height of the housing member and the rotational position of one housing section relative to the other may be determined by the cutting and reassembly process. A support ring is mounted on the housing member and includes a peripheral flange of a diameter greater than the housing member so that aircraft loads on the light fixture may be transmitted directly to the runway structure and not through the housing.