Help promote your business using Proline's new SAMPLE BOARDS. Proline, celebrating our 20th year, continues to break new ground and develop new products. Our newest innovation is our SAMPLE BOARDS. Designed for Contractors to use as color sample for homeowners, Proline's Sample Boards can be ordered in over 40 colors from our Color Hardener color chart. These lightweight boards measure approximately 23" x 23" and weight less than 10 lbs. With over 30 patterns to choose from, these boards are easily colored using Proline's EZ-Accent water based stains, Proline's Dura-Stain reactive stain and Proline's EZ-Tique water based antiquing wash.