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A window box built from PVC trim board instead of wood, sized to match the width of the window it sits under.
| Part | Qty | T × W × L | Material | ✓ |
|---|---|---|---|---|
| Front/back panels Adjust length to match your window's width. | 2 | 3/4" × 7 1/4" × 32" | 1x8 PVC | ☐ |
| Bottom | 1 | 3/4" × 6 1/2" × 32" | 1x8 PVC, ripped | ☐ |
| End panels | 2 | 3/4" × 7 1/4" × 8" | 1x8 PVC | ☐ |
| Front trim Mitered both ends. | 1 | 3/4" × 1 1/2" × 33 1/2" | 1x2 PVC | ☐ |
| Side trim Mitered one end. | 2 | 3/4" × 1 1/2" × 8 1/2" | 1x2 PVC | ☐ |
| Mounting cleats Mitered lengthwise along the top edge. | 2 | 3/4" × 2 1/2" × 30 1/2" | 1x3 PVC | ☐ |
| Item | Qty | ✓ |
|---|---|---|
| PVC trim board, 1x8, 10 ft | 1 each | ☐ |
| PVC trim board, 1x3, 8 ft | 1 each | ☐ |
| PVC trim board, 1x2, 8 ft | 1 each | ☐ |
| PVC cove moulding | 1 each | ☐ |
| PVC cement | 1 can | ☐ |
| Exterior caulk | 1 tube | ☐ |
| Finish nails, 1-1/4" | 1 box | ☐ |
| Mounting screws (Tapcon for brick, wood screws for siding) | 10 each | ☐ |
Overall cost: $$. Lumber varies by region, species, and season, so we give a band rather than a figure.