# Sidebar 21 - Sidebar with drill-down navigation

> A sidebar that replaces the main menu with a child list and back control when a parent item is opened, plus logo header and user footer.

A paid shadcn/ui block sold by the [@shadcnblocks](https://shadcnblocks.com/?utm_source=shadcn.exchange) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/shadcnblocks/sidebar21).

- Page, with a preview: https://shadcn.exchange/r/shadcnblocks/sidebar21
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/shadcnblocks/sidebar21-light-9d3f5c51d1d55289.png
- Listed: 2026-10-13

## Buy and install

@shadcnblocks sells this block, and its code is not on shadcn.exchange. Buy it from the registry, which installs it for those who have: https://shadcn.exchange/out/shadcnblocks/sidebar21