Door for Animal Housing Unit

FIG. 1 is a top front perspective view of a door for animal housing unit illustrating our ornamental design;

FIG. 2 is a bottom rear perspective view thereof;

FIG. 3 is a left-side elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The dash-dash broken lines in the figures depict portions of the article and form no part of the claimed design. The dot-dash broken lines represent boundaries of the claimed design and form no part thereof.