Gabe Ortiz This Trilogy Fiberglass Columbia Model, flat back kidney shaped swimming pool, in river rock color, is 14.5’ x 28’. The shallow depth is 5’ and 10” depth at deep end. The deck is a Smooth Finished Concrete with a Rock Salt Finish and Cantilever Coping Project also had a 3 ft retaining wall built to combat slope and keep whole yard as useable space. All Pentair equipment used and a Color Changing LED Light is in the pool as well.