Options Not included in the basic price The RIVER pool standard size is 8' x 14'-11" (Inside dimensions). For the pool to be functional with the electronic feedback system adjusting the water speed to the swimmer's speed, we suggest a minimum width of 7' and a minimum length of 13'. Optional sizes (inside dimensions):    - One foot narrower (7' x 14'-11")    - One foot wider (9' x 14'-11")    - Two feet wider (10' x 14'-11")    - One foot shorter (8' x 13'-11")    - Two feet shorter (8' x 12'-11")    - A combination of the above.    - Other sizes possible upon request. Pool border (included in basic price) Wood border 2" x 15". Non-slip finish. Installed: $320 Ultra-bright Electronic Speed Display (included in basic price) Normally installed on the pool border, displays a reference speed of the water flow. Digital 7-day Programmable Timer (included in basic price) Installed in the Pool Control Center. Digital Programmable Temperature Controller (included in basic price) Installed in the Pool Control Center. Deep well: 18" deep (or as required) 48" wide 48" long (flat part) + 48" (slanted part) $280 Ladders: Plastic 4-step: $140 Plastic stairs 4-step: $200 Stainless Steel 3-plastic steps: $195               Pool Hard Cover: 6" thick for high insulation. Safety for children and pets. Comes in four sections easily movable. Built to fit your pool size. Slanted, to allow rain water to flow sideways. Fits Endless-Pools® pools. Lowest price anywhere for a hard cover. Solar Heating: Integrated with your River pool filter pump. Requires less than 200 sqft of roof area. Electronically controlled operation. Save on pool heating costs. Liner color and pattern: (included in basic price) We suggest 27 mil liners. Choose your preferred pattern. Click HERE for more patterns. Underwater Light: White, comes with blue and red lenses. 3-1/2" diameter, 55W Halogen bulb. Massage Jets: - One person 4-jets (back only) - One person 6-jets (back and seat) - Two people 8 jets (back only) - Two people 12-jets (back and seat)