This wooden adjustable canvas carrier by Jullian can securely and safely carry up to four 3/4 inch deep stretched canvases or eight painting panels. The instructions for use are as follows, just place a wet canvas in one of the bottom grooves, pointed inward toward the mast and adjust the canvas holder located at the top to tighten it in place. You can place another canvas or panel on the opposite side of the carrier with the same method. This will protect all your paintings from harm and damage, some of the more common ways are smudging, physical contact, scrapes or dust.