Adjustable ShelfTrack Organiser Kit 8808, 1.22m (4') up to 1.83m (6') wide
Closet Shelves: Adjustable Shelves and Pullouts - YouTube
Cheap and Easy DIY Closet Shelves - The Handyman's Daughter
ClosetMaid ShelfTrack Wire Closet Organizer System, Adjustable from 4 to 6 Ft., With Shelves, Clothes Rods, Hardware, Durable Steel, White : Amazon.co.uk: Home & Kitchen
maybe I should consider adjustable - but make my own corner shelves | Linen closet shelves, Adjustable closet shelving, Pantry makeover