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A floor-to-ceiling shiplap fireplace bump-out for an electric insert, with a solid-beam mantle and TV mounting built into the framing. Two stud walls and a lot of trim discipline.
| Part | Qty | T × W × L | Material | ✓ |
|---|---|---|---|---|
| Back wall verticals Or 1" less than YOUR ceiling height. | 2 | 1 1/2" × 3 1/2" × 95" | — | ☐ |
| Back wall horizontals Or desired width minus 3". | 3 | 1 1/2" × 3 1/2" × 57" | — | ☐ |
| Front wall verticals Match the back wall. | 2 | 1 1/2" × 3 1/2" × 95" | — | ☐ |
| Front wall horizontals | 3 | 1 1/2" × 3 1/2" × 57" | — | ☐ |
| Insert opening uprights Desired opening-top height minus 1-1/2" — follow your insert's spec. | 2 | 1 1/2" × 3 1/2" × 28 1/2" | — | ☐ |
| Insert opening header Your insert's opening width. | 1 | 1 1/2" × 3 1/2" × 33" | — | ☐ |
| Upper verticals (TV bay) Measure and cut to fit; spaced to your TV bracket. | 2 | 1 1/2" × 3 1/2" × 62" | — | ☐ |
| Mantle blocking | 2 | 1 1/2" × 3 1/2" × 24" | — | ☐ |
| Depth blocks (sides) Or your chosen bump-out depth. | 6 | 1 1/2" × 3 1/2" × 12" | — | ☐ |
| Mantle | 1 | 3 1/2" × 5 1/2" × 54" | 4x6 beam | ☐ |
| Item | Qty | ✓ |
|---|---|---|
| 2x4, 8 ft Vertical framing and blocking. | 8 each | ☐ |
| 2x4, 10 ft The 57" horizontal members cut from these. | 6 each | ☐ |
| Shiplap boards, ~56 sq ft 12-foot lengths waste least. Primed MDF shiplap is cheapest; pine takes stain. | 1 each | ☐ |
| 1x3 trim boards, 8 ft | 8 each | ☐ |
| Quarter round or shoe moulding, 3/4" Only if the ceiling gap needs covering. | 6 linear ft | ☐ |
| 4x6 beam, 54" The mantle. A real timber, not a hollow box — hence the lag screws. | 1 each | ☐ |
| Lag screws, 6" Mantle mounting, driven from behind. | 4 each | ☐ |
| Self-tapping screws, #9 x 2-1/2", star drive | 100 each | ☐ |
| Brad nails, 1-1/4", 18 ga | 500 each | ☐ |
| Wood filler | 8 oz | ☐ |
| Paint | 1 quart | ☐ |
| Electric fireplace insert, 36" As shown: 36" wide x 17" tall unit in a 33" x 16" opening. Buy FIRST; frame to ITS manual. Not included in the cost estimate. | 1 each | ☐ |
Overall cost: $$$. Lumber varies by region, species, and season, so we give a band rather than a figure.