Tiers are most common and fit well in kitchens, bathrooms or offices.
If you need more layers, you might find 5-tier or configurable options in some stores.
Material & Durability
Look for sturdy hard plastic (ABS or similar) with strong shelves that won’t sag.
If you need heavy-duty storage (e.g., jars or large bottles), check weight capacity.
Mobility & Design
Some models have wheels or removable shelves — handy if you want to move it around.