Nichihas 1/4 in. Plastic Corrugated Shims support the structural and aesthetic integrity of the wall system by maintaining consistent gaps between panels, which is critical for drainage and thermal movement. At 1/4 inch thick, these shims are suitable for creating the necessary stand-off in rainscreen assemblies or for adjustments around openings and corners. With a durable profile and easy-to-handle format, they are a small but important part of a code-compliant exterior envelope that prioritizes long-term performance. They are sold in packs designed for efficient jobsite use.