12x12 File Master Storage Box

File Masters are Mess Masters—and the 12x12 size is your go-to for organizing big! Whether you're sorting scrapbook layouts, cardmaking kits, or rolls of 12" vinyl, this oversized box keeps everything upright, visible, and easy to grab. It's perfect for storing large paper pads, sticker sheets, stencils, and themed crafting collections.

Pair it with TOO 12x12 Fancy Folio to organize by theme, holiday, color, or project—then slide your folios right into the File Master for a system that’s as compact as it is functional. But this box isn't just for creative supplies. Use it to store school posters, presentation materials, sheet music, coloring books, or even a folded set of bed sheets. Lightweight yet durable, it's a versatile solution for any space that needs a little extra order.

Each box includes 1 set of 5 Flip Flap Tabbed Divider Pockets and 5 label stickers to get you started. It holds up to 25 pockets total, so you can expand your system as your stash grows. Whether you're crafting, teaching, or tidying up your home, the 12x12 File Master helps you keep things together you use together.

Favorite Uses:
Bags and Bows are one of our favorite ways to use the 12x12 File Master for Gift Bag Storage. Organize gift bags by theme Birthday, Wedding, Baby and store them away. When you're ready to wrap, you'll find everything quickly and easily.

Projects in Process Are you working on a home remodel, planning a wedding, or collecting all the mementos from your child's school year? This oversized box is the perfect way to store and organize these items as you work through your project.

Good to Know:
Easy fold together assembly.
The actual box size is bigger than 12x12, so if you’re looking to fill out a particular space, please review the actual dimensions.
Yes, these boxes will fit in your IKEA Kallax/Expedit, and other cube style shelving.

What's in the package:
1 12x12 File Master Storage Box
5 Flip Flap Tabbed Divider Pockets
1 Sheet of label stickers for the Flip Flap Pockets

Companion Products:
12x12 Flip Flap Tabbed Divider Pockets
12x12 Fancy Folios

Approximate Size: 13" H x 12.75" W x 3.25" D