K-9 EZ Boy. Radiographic Positioning Aids. Positioning aids are valuable in: - Reducing radiation exposure to clinic staff. - Decreasing motion. - Positioning animals for a variety of procedures. - Patient comfort. Radiographic Positioning Aids are available in a variety of shapes with the most popular being the 'V' trough. Two Styles 1. Non-coated: soft open cell gray sponge material provides excellent support and comfort at a less expensive cost. 2. Covered: dark blue nylon reinforced vinyl. Also features hook and loop straps to secure limbs; readily cleaned for quick re-use. Covered. Set of 4 sizes. Includes: J1286 - Small, J1286a - Medium, J1286b - Large, J1286C - X-Large Sizes: Length / Width / Height Small 10" 4" 3" Medium 15" 7" 5" Large 24" 11" 7" X-Large 36" 14" 9" Weight reflected in additional information is in reference to dimensional weight for shipping purposes.