This proof is about 1/8" to 1/4" taller and wider than a regular card (unless it's an uncut proof which is a bit bigger than that). Printed on regular card stock with back complete unless noted in title. See pics for confirmation. Please keep in mind that, since proof cards were not intended for release onto the secondary market, some may have surface scratches or other minor flaws.
But most are in at least nm/mt condition, with decent edges, corners, and centering.