Mercury 2-Piece Stackable Shoe Rack Set with Slatted Shelves in Natural Finish, Converts to (2) 2-Tier Rack or (1) 4-Tier Rack by Winsome Wood | KitchenSource.com
2-Piece Stackable Shoe Rack | Ginny's
Whitmor White Expandable & Stackable Shoe Rack | City Mill
Amazon.com: HOMEFORT 4-Tier Shoe Rack, Metal Shoe Tower,20 Pairs Shoe Storage Shelf, Entryway Stackable Shoes Organizer with 4 Tiers Metal Shelves, For Closet, Hallway, Entryway, Black : Home & Kitchen