Specifications include, but are not limited to: Tank Volume Minimum Volume: seven thousand (7,000) gallons Maximum Volume: seven thousand five hundred (7,500) gallons Build Volume Minimum Length Size: thirty (30) feet Maximum Length Size: thirty-five (35) feet Minimum Width Size: twelve (12) feet Maximum Width Size: fifteen (15) feet Minimum Depth (with Dividing Wall): three (3) feet Maximum Depth (with Dividing Wall): four (4) feet Fiberglass Thickness Minimum Thickness: 0.25 inches Maximum Thickness: 0.75 inches Center Divider Minimum: three (3) inches thick Maximum: four (4) inches thick Outward Flange Minimum: six (6) inches Maximum: eight (8) inches Structural Fins Minimum: eighteen (18) inches Maximum: twenty (20) inches