Most standard kennels are made from an appropriate grade and gauge of metal. Combination-material models are also available.
Heavy-duty uncoated steel (25-7 gauge). (Note: metal thickness increases as its gauge decreases).
Galvanized steel or iron (27-6 gauge). Go for steel because it is relatively more rust and corrosion resistant.
Metal tubular frames and welded wires or metal mesh.
Combination materials:
Metal frame and wood cabins
Metal frame and body with canvas, vinyl, or firebrick roof
Most kennels are available in neutral colors and finishes that match the outdoor environments. The most preferred are white, gray, black, mud-brown, and silver finishes.