Fifth Wheels Fifth Wheels 4405 PSN . Call 480-464-9724 or 1-888-895-9009. 2008 Keystone Cougar 278RKS 1 Slide This used fifth wheel has a 15K Btu Ducted roof air power tongue jack stab jacks microwave power roof vent roof rack & ladder am/fm/cd tv antenna with booster spare tire & carrier gas electric combo dsi water heater walk-thru bath queen bed sofa free standing dinette swivel chair and more...