The ornamental design for a housing for an under telephone extension reel, as shown.
FIG. 1 is a top plan view of a housing for an under telephone extension
reel showing my new design is closed posture;
FIG. 2 is a left side, top and front perspective view thereof in alternate,
opened, posture;
FIG. 3 is a bottom plan view; and
FIG. 4 is a right side, bottom and rear perspective view thereof in a
closed posture.
The broken line showing of the plug and truncated electric wire cord in the
drawings is for illustrative purposes only and forms no part of the
claimed design.