KEYSTONE RESIDENCE 2011 41FT PARK MODEL TRAILER Mount Pearl (Avalon) $33,000.00 2011 KEYSTONE 401 Fe, (NEW PRICE) For Sale Keystone Residence 2011, 401FE, 41Ft Park Model Home (Trailer). Includes 8 ft X 10 ft shed 2 Patio Decks- 1 Upper 10 ft. X18 ft ... Last Updated 3 weeks ago