Dimensions below outline the Wright Part Number 3355, a 1/3 CY self dumping Hopper.

| Part No | 3377 | |
| Capacity | 1/3 | |
| Weight Capacity | 4000 | |
| Height (A) | 33 1/2 | |
| Width (B) | 31 1/2 | |
| Length (C) | 51 1/2 | |
| Fork Opening (D) | 3x20 | |
| Pouring Lip (E) | 2 3 1/2 | |
| Container Length (F) | 51 1/2 | |
| Dump Clearance Height (G) | 50 1/2 | |
| Dump Clearance Bottom (H) | 4 1/2 | |
| Dump Clearance Length (I) | 65 1/2 | |
| Front Clearance (J) | 1 1/2 | |
| Base Width (K) | 28 1/2 | |
| Base Length (L) | 50 | |
| Dump Angle (M) | 38 | |
| Center of Gravity (N) | 21 1/8 | |
| Approx. Weight | 340 | |