Our custom overflow spa can be added to any one of the Pettit Fiberglass Pool design options for a unique backyard oasis. Spa Specs 5' 7' 2' 8" Gallons 350 gal. Spa Square Footage 34 sq. ft. Decking Square Footage N/A See It Installed Previous Next Need Financing? We partner with several lenders to find the right financing options available to you, regardless of your credit score. Get Started Now