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A working door built as a shallow bookshelf, hung in a matching frame — a hidden-passage bookcase that swings open on heavy hinges.
| Part | Qty | T × W × L | Material | ✓ |
|---|---|---|---|---|
| Door frame stiles/rails Cut to your opening minus 1/2" for a 1/4" gap all around. 79.5" shown for an 80" opening. | 2 | 1 1/2" × 3 1/2" × 79 1/2" | 2x4 | ☐ |
| Door frame cross-pieces Door width minus 7" (two 2x4 stiles). Derived from your opening. | 2 | 1 1/2" × 5 1/2" × 29" | 2x6 | ☐ |
| Bookshelf sides To fit inside the door frame. | 2 | 3/4" × 5 1/2" × 72" | 1x6 | ☐ |
| Shelves As many as you want; length to the interior width. | 5 | 3/4" × 5 1/2" × 29" | 1x6 | ☐ |
| Back Cut to the assembled shelf unit. | 1 | 1/4" × 32" × 74" | 1/4" plywood | ☐ |
| Item | Qty | ✓ |
|---|---|---|
| 2x4 board, 8 ft (Pine or Fir) Door frame stiles/rails. | 2 each | ☐ |
| 2x6 board, 8 ft (Pine or Fir) Frame cross-pieces. | 1 each | ☐ |
| 1x6 board, 8 ft (Pine) Shelves and sides — more for a wider or taller unit. | 4 each | ☐ |
| 1/4" plywood, half sheet Back of the bookshelf. | 1 each | ☐ |
| Heavy-duty hinges Rated well above the loaded door weight — this is not the place to save money. | 3 each | ☐ |
| Caster wheel At the swinging bottom corner for wide/heavy doors; lets the floor share the load. | 1 each | ☐ |
| Lock, clasp, and gate hardware | 1 each | ☐ |
| Pocket-hole and wood screws, 1-1/4" and 2-1/2" | 80 each | ☐ |
| Wood glue | 6 oz | ☐ |
| Door-stop molding Behind the frame, so the door has a clean place to close. | 18 ft | ☐ |
Overall cost: $$$. Lumber varies by region, species, and season, so we give a band rather than a figure.