Forgive me for not being insightful enough to determine this   . But do you mean 30' centerline "ball cup to back of bumper", or just the "box"?
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2018 Laredo 288RL Travel Trailer
2017 Silverado 2500 Crew Cab LTZ, Z-71, 6.6L Diesel
2017 Bullet Premier 19FBPR (traded)
2011 Silverado Crew Cab, 4wd Z-71, 5.3L (traded)
K9 Handler of my SAR partner and best friend Jeter!
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