2010 Keystone Cougar 318SAB, Used Keystone RV for Sale - 2010 Keystone Cougar with 3 slides model 318SAB. This RV is approximately 34' in length and features power front leveling jacks, futon sofa, dinette table and chairs, radio/DVD player, Auto Seek Satellite, and a large Flat Screen TV. Some additional features include: power patio awning, gas water heater, pass-thru storage, black tank rinsing system, exterior sprayer hose, ducted roof A/C, dual pane windows, tinted windows, day/night shades, 3-burner range with oven, microwave, refrigerator, queen mattress and much more. $24,500.00 3185730317