Cube 12 – 12 × 12 × 12 in
A standard in retail and e-commerce for bulkier items. Frequently used for office supplies, tools, or multi-unit shipping. 

Tall Cube 12 XL – 12 × 12 × 18 in
Deep enough for paperback collections, tall vases, or mini-plant pots—great when height needs outscale floor area.

Cube 14 – 14 × 14 × 14 in
Built for robust mid-size shipping. FedEx lists this size for homeware like mixing bowls and small appliances. 

Cube 15 – 15 × 10 × 10 in
A more rectangular format that fits mugs, accessories, or bundled retail items perfectly.

Cube 16 – 16 × 16 × 16 in
A “heavyweight” medium box—fits large decor, kitchen gadgets, or grouped smaller items with space for protective padding.