Fredrix - Archival Canvas Board - Cotton - 18x24 - Fredrix Archival Cotton Canvas Board is a professional grade, archival painting surface with medium texture canvas mounted on an acid free board. Good for acrylic, oils and mixed media. All Fredrix canvas is primed in the USA which allows for complete control over the priming process. Only Fredrix Artist Canvas displays an archival seal of quality to guarantee a finished painting that will withstand the test of time. You can trust Fredrix to provide you with your best overall painting experience.