# Dual sidebar app shell with icon rail and collapsible secondary navigation panel

> Two-level dashboard layout: icon rail plus a toggleable secondary nav that swaps per section, with workspace switcher, breadcrumb header, search, and account menu with theme toggle. ReUI Badge, shadcn Sidebar, DropdownMenu, Avatar.

A paid shadcn/ui block sold by the [@reui](https://reui.io/?utm_source=shadcn.exchange) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/reui/app-shell-16).

- Page, with a preview: https://shadcn.exchange/r/reui/app-shell-16
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/reui/app-shell-16-light-18cf50a9032575e1.png
- Listed: 2026-10-13

## Buy and install

@reui 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/reui/app-shell-16

## Dependencies

- npm packages: `cn`, `next-themes`
- Registry items: `@reui/badge`, `avatar`, `button`, `card`, `dialog`, `dropdown-menu`, `input`, `item`, `scroll-area`, `sidebar`