A New Model Now Available Exclusively from American Fiberglass Pools. This is truly the LARGEST fiberglass pool available in the world. With inside dimensions a true 19 x 43 ft., you will have lots of room to swim, perform water aerobics, swim laps, and enjoy a cool dip during the long, hot, humid, summertime. No other fiberglass pool available offers you over 760 sq. ft. of pure uninterrupted aquatic enjoyment. Just like the river of its name, the Guadalupe will offer you a lifetime of gentle water induced relaxation.