Specifications     MODELS 350 450 550 750 1000 1200               Capacity-cu yd 3.5 4.5 5.5 7.5 10 12 Length of box 96 120 144 144 168 144 Width at top of box 48 48 48 60 60 72 Width at bottom of box 30 30 30 36 36 48 Overall length 151 175 207 207 231 207 Overall width at tires 57 57 57 66 66 78 Overall height 78 78 78 91 91 91 Weight lbs 2100 2250 2400 4050 4200 4200 #80 drive chain X X X X X X #667X floor chain X X X X X X 1.75" floor shafts X X X X X X Feed belt width 16 16 16 21 21 21 Tire size 11L-16 6 ply 11L-16 8 ply 11L-16 8 ply 11L-16 8 ply 12.5L-16 8 ply 12.5L-16 8 ply Axel type single single tandem tandem tandem tandem HD 6-bolt hub & spindles X X X X     HD 8-bolt hub & spindles         X X Included in specifications as follows: - 10 Gauge steel used on sides and ends with 3/16" floor sheet - Rust-tough industrial enamel body finish standard on all models - Optional Tractor PTO hydraulic system with variable speed controls on all models Whatcom Manufacturing can custom build any of our models to meet your special needs. For example, one of our "special orders" modles has 14 yard capacity and a reversible discharge belt that can spread material on both sides. These units are also available with a cleated belt and a higher speed motor to throw material out as far as 10 feet! We welcome customers feedback for other helpful features or modifications. Give us a call and let us know how we can help.