A1.1.1 Flat section specimens cut from finished product
lineals or laboratory extruded samples are exposed in accordance
with Practice D1435 and Practice G147 at 45° S,
plywood-backed, in a hot, dry (desert) climate, such as
Phoenix, AZ; a hot, humid climate such as Miami, FL; and in
a northern temperate climate for periods of six months, one
year and two years.