Ensuring you are Ready for the Road Ahead , the Key Polymer Quick Patch Trailer Wood Floor Crack Filler repairs and prevents additional decay and damage in cracks that permit water and light penetration. This heavy duty trailer floor crack filler is packaged in two individual plastic containers making one quart of the final product. Combine Part B with Part A, mix, and apply with a putty knife. FleetPride is your First Click in Heavy Duty .