It aids in ridding the house of dust if, when the fowls are out, a searching breeze can blow through occasionally. For this reason, end doors are a great advantage, but they must be draft-proof.

The good points of an otherwise well-built poultry house may be set at naught by carelessly made doors, which fit loosely in their casings.

Doors which open on the cold or exposed side of a building require more precautions against drafts than those on the sunny side. The door should be of tightly fitted boards, and covered on the inner side with tarred roofing paper, or thin, narrow boards.The following hints are for a door that is practically draft-proof: For the door itself use tongue-and-groove boards, an inch thick, reinforced six inches from the top and bottom by cross-pieces six inches wide, and beneath the latch by a rectangle of the same wood. Over this is tacked sheathing paper, fitting it about the cross-pieces. The inner side is finished with narrow tongue-and-groove ceiling boards. (These may be placed over the battens or between them.) In case they are to be placed over the battens, the open space between the two board surfaces is closed with a narrow wooden strip.

The door casing is five inches thick, the sill board six inches wide, and slanting to one inch lower on the outside than on the inside. On the sides and across the upper part of the door casing are nailed inch-thick strips which, with the edge of the casing against which the door shuts, gives a two-inch edge which effectually excludes air currents. Against the lower edge of the door is a heavy strip of felt, reinforced with leather where it is tacked to the door.