Abstract: Tank fittings are provided. A tank fitting has a coupling. The coupling includes a flange disposed between a first end and a second end of the coupling. External threads are disposed between the flange and the first end. A gasket is disposed on the coupling between the flange and the first end of the coupling so as to abut the flange. The tank fitting also includes a nut that is threadably attachable to the external threads of the coupling.

Abstract: A stackable poultry coop formed of complementary upper and lower sections and a door. The upper section has an upper wall with a central opening bounded by a plurality of upwardly extending flanges. The lower section has a lower wall formed of a flexible grid and a plurality of downwardly extending ribs adapted to engage and nest with the flanges of another coop when in stacking relation thereto. The lower wall ribs are positioned around the periphery of the lower wall to allow at least its central portion to flex and each of the upper and lower walls have a marginal wall extending generally at right angles from their periphery. The upper, lower and marginal walls are provided with a plurality of openings to provide ventilation as well as to facilitate cleaning.