The New 2016 GR STB6820W14LNRCS 6'8"x20 you are looking for is already out working with its new owner. Here are some similar units from Diamond K Sales that you might enjoy!
#C001661 - 2024 GR 6'8"X24' 14K Gooseneck Stock Trailer
Price: $19,500.00#C013073 - 2022 GR 7' x 26' x6'10" 16K
Price: $29,350.00#1102748 - 2022 Swift Built SB20 6'5" X 20' Gooseneck
Price: $20,150.00#C001665 - 2024 GR 6'8" X 20' GR LIVESTOCK WITH TACK ROOM
Price: $20,900.00#2030998 - 2023 EBY Maverick 6'11" X 20' X 6'6"
Price: $32,000.00#C004775 - 2024 GR 6'8" X 14' 10K
Price: $10,750.00#A044643 - 2023 Vern's Mfg STOCK 6' X 12' -10K
Price: $11,150.00#2031047 - 2023 EBY Maverick 6'11" X 24' X 6'6" DAKOTA EDITION
Price: $42,995.00