Package Include: 3 pack organizer with 8 slots, stained glass supplies for storing glass Multiple Function: organize stained glass and mosaic glass from 4 inch to 12 inch, it can also organize scrapbooks, patterned paper, plates or cups Stained Glass Storage Shelves Size: 8 slots organizer with 1.5 inch openings, thick base and columns, each storage rack measures 13.5L x 5.1W x 4.1H inches or 13.5L x 5.1W x 8.3H inches Easy to Assemble: The stained glass supplies comes with 4 parts, 18 vertical bamboo columns (9 columns on each side) create 8 slots for stained glass storing, easy to install Premium Material: Made of bamboo, the surface is polished, it is smooth and sturdy, good choice for stained glass crafters and hobbyist stained glass sheets organizer supplies