Double Picture Frame Molding for a 21 ft Wall: Ceiling Heights and Cut Plans
This 21 ft wall and 8 ft ceiling example compares complete double picture frame molding arrangements, not only panel widths. Use the setting-out coordinates to mark the wall, then compare the material and clear-opening changes before selecting a kit.
How the width and openings were calculated
(252 − 8 − (7 − 1) × 4) ÷ 7 = 31.429 inches outside frame width. Subtract two 1.25-inch profile faces for the visible opening: 28.929 in / 734.786 mm.
Four-inch side margins and gaps; 1.25 in / 31.75 mm profile faces; 5.5-inch existing baseboard. The chair rail, when present, has an assumed 2.5-inch face.
Compare complete alternatives for this wall
| Columns / bays | Clear opening width | Clear opening height | Listed pieces / runs | Net material | With 10% allowance | Difference |
|---|---|---|---|---|---|---|
| 6 | 34.833 in / 884.767 mm | 48.5 in / 1231.9 mm | 97 | 290.333 linear ft / 88.494 m | 320 linear ft / 97.536 m | 17.333 linear ft less trim |
| 7 | 28.929 in / 734.786 mm | 48.5 in / 1231.9 mm | 113 | 307.667 linear ft / 93.777 m | 339 linear ft / 103.327 m | Illustrated |
| 8 | 24.5 in / 622.3 mm | 48.5 in / 1231.9 mm | 129 | 325 linear ft / 99.06 m | 358 linear ft / 109.118 m | 17.333 linear ft more trim |
Across these options the net material ranges from 290.333 linear ft / 88.494 m to 325 linear ft / 99.06 m. Fewer divisions widen the openings; more divisions add vertical edges. Choose using furniture and artwork outlines rather than assuming the highest panel count is better. The cut schedule below belongs to the illustrated 7-division option.
Cut schedule and material allowance
| Component | Quantity | Length each / run | Measurement basis |
|---|---|---|---|
| Upper horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Upper verticals | 14 | 51 in / 1295.4 mm | Outside long point; 45-degree miters |
| Upper inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Upper inner verticals | 14 | 45.5 in / 1155.7 mm | Outside long point; 45-degree miters |
| Lower horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Lower verticals | 14 | 20 in / 508 mm | Outside long point; 45-degree miters |
| Lower inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Lower inner verticals | 14 | 14.5 in / 368.3 mm | Outside long point; 45-degree miters |
| Chair rail run | 1 | 252 in / 6400.8 mm | Total run; stock lengths and joins to confirm |
The listed components total 307.667 linear ft / 93.777 m. A 10% cutting allowance, rounded up to a whole foot, gives 339 linear ft / 103.327 m. This includes only the listed components; baseboards, adhesive, paint and unlisted return pieces are separate. Continuous rails are total runs, not a promise of one supplied piece.
Setting-out positions from one fixed corner
Measure horizontally from the finished left corner and vertically up from the finished floor. The table uses outside frame edges or board edges, not the center of a pencil line. Mark positions directly from the origin so rounded gaps do not accumulate.
| Element | Left edge from corner | Right edge from corner | Top above floor | Bottom above floor |
|---|---|---|---|---|
| Upper frame 1 | 4 in / 101.6 mm | 35.429 in / 899.886 mm | 91 in / 2311.4 mm | 40 in / 1016 mm |
| Upper frame 2 | 39.429 in / 1001.486 mm | 70.857 in / 1799.771 mm | 91 in / 2311.4 mm | 40 in / 1016 mm |
| Upper frame 3 | 74.857 in / 1901.371 mm | 106.286 in / 2699.657 mm | 91 in / 2311.4 mm | 40 in / 1016 mm |
| Upper frame 4 | 110.286 in / 2801.257 mm | 141.714 in / 3599.543 mm | 91 in / 2311.4 mm | 40 in / 1016 mm |
| Upper frame 5 | 145.714 in / 3701.143 mm | 177.143 in / 4499.429 mm | 91 in / 2311.4 mm | 40 in / 1016 mm |
| Upper frame 6 | 181.143 in / 4601.029 mm | 212.571 in / 5399.314 mm | 91 in / 2311.4 mm | 40 in / 1016 mm |
| Upper frame 7 | 216.571 in / 5500.914 mm | 248 in / 6299.2 mm | 91 in / 2311.4 mm | 40 in / 1016 mm |
| Lower frame 1 | 4 in / 101.6 mm | 35.429 in / 899.886 mm | 29.5 in / 749.3 mm | 9.5 in / 241.3 mm |
| Lower frame 2 | 39.429 in / 1001.486 mm | 70.857 in / 1799.771 mm | 29.5 in / 749.3 mm | 9.5 in / 241.3 mm |
| Lower frame 3 | 74.857 in / 1901.371 mm | 106.286 in / 2699.657 mm | 29.5 in / 749.3 mm | 9.5 in / 241.3 mm |
| Lower frame 4 | 110.286 in / 2801.257 mm | 141.714 in / 3599.543 mm | 29.5 in / 749.3 mm | 9.5 in / 241.3 mm |
| Lower frame 5 | 145.714 in / 3701.143 mm | 177.143 in / 4499.429 mm | 29.5 in / 749.3 mm | 9.5 in / 241.3 mm |
| Lower frame 6 | 181.143 in / 4601.029 mm | 212.571 in / 5399.314 mm | 29.5 in / 749.3 mm | 9.5 in / 241.3 mm |
| Lower frame 7 | 216.571 in / 5500.914 mm | 248 in / 6299.2 mm | 29.5 in / 749.3 mm | 9.5 in / 241.3 mm |
What changes when your measurement changes?
| Measured change | Clear width | Clear height | Recalculated net trim | Change from illustrated |
|---|---|---|---|---|
| Wall 251 in; same count | 28.786 in / 731.157 mm | 48.5 in / 1231.9 mm | 306.917 linear ft / 93.548 m | -0.75 linear ft |
| Wall 253 in; same count | 29.071 in / 738.414 mm | 48.5 in / 1231.9 mm | 308.417 linear ft / 94.005 m | 0.75 linear ft |
| Ceiling 102 in; same count | 28.929 in / 734.786 mm | 52.25 in / 1327.15 mm | 321.667 linear ft / 98.044 m | 14 linear ft |
At a fixed count of 7, a one-inch wall-width error changes each frame or bay by 0.143 in / 3.629 mm. A different count, profile face or rail position requires a full recalculation. The taller-ceiling row follows this example’s proportional rail/cap rule; an existing fixed rail needs a separate calculation.
Will the inner frame leave a useful opening?
| Measurement | Calculated width |
|---|---|
| Outer outside width | 31.429 in / 798.286 mm |
| Outer inside opening | 28.929 in / 734.786 mm |
| Inner outside width | 25.929 in / 658.586 mm |
| Inner inside opening | 23.429 in / 595.086 mm |
The inner outside edge starts 2.75 in / 69.85 mm inside the outer outside edge. That includes the outer profile face plus a 1.5-inch clear gap. Check the smallest lower opening as well as the upper row; an inner border that fits geometrically can still be too narrow for the artwork you intend to frame.
Product images and kit choices
These images come from the linked Trim Wall Haus product listings. They show the product style; the pictured configuration is not automatically the cut schedule on this page.
Instant Nested Frame Wall Trim Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Quick Easy Installation
Nested Wall Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Easy Installation
Nested Frame Nursery Wall Molding Kit, Ready to Assemble | 3 Upper & 3 Bottom Nested FramesQuestions for this specific plan
How wide is the usable opening, rather than the outside frame?
The illustrated outer opening is 28.929 in / 734.786 mm wide after subtracting the two assumed 1.25-inch faces. A different profile changes this opening even when the outside frame dimensions stay the same.
How much trim does this 21 ft by 8 ft option use?
The listed schedule totals 307.667 linear ft / 93.777 m; the rounded 10% allowance is 339 linear ft / 103.327 m. Recalculate when changing count, profile, rail height or wall dimensions. This is a planning quantity, not a quoted kit configuration.
Where do I start marking the 7-division arrangement?
Use the finished left corner and floor as fixed datums. The first listed element begins 4 in / 101.6 mm from that corner. Mark each coordinate in the setting-out table directly rather than repeatedly stepping off rounded gaps.
Does ordering a linked kit guarantee these exact cuts?
No. The product photographs and links identify suitable looks. Confirm supplied sizes, frame count, profile width, material and installation method on the selected listing, then have a custom arrangement reviewed before ordering.
Continue with your wall measurements
Usable openings and trim-face coverage
| Calculated measurement | Result |
|---|---|
| Wall area above assumed baseboard | 158.375 sq ft |
| Estimated area covered by trim faces | 33.021 sq ft |
| Wall area outside trim faces | 125.354 sq ft |
| Trim-face share of wall above baseboard | 20.85% |
| Largest framed/grid rectangular opening | 23.429 in / 595.086 mm × 43 in / 1092.2 mm |
| Area of that rectangular opening | 6.996 sq ft |
| Artwork test with a 2-inch visual margin on all sides | 19.429 in / 493.486 mm × 39 in / 990.6 mm |
Face coverage is the union of the drawn trim strips, excluding the existing 5.5-inch baseboard. Curved profiles use a centerline-length × face-width estimate. Wall area outside trim still includes areas behind reserved furniture; it is not a visible-paint estimate. The artwork test is a visual comparison, not a mounting clearance. For an arch, the rectangular opening is measured below the spring line.
Cut-stock fit with two assumed lengths
| Profile group | Assumed stock length | Stock pieces in this packing | Unallocated stock / limitation | Interpretation |
|---|---|---|---|---|
| Straight frame / board profile | 96 in / 2438.4 mm | 39 | 304 in / 7721.6 mm | Includes kerf and unusable remainder |
| Straight frame / board profile | 120 in / 3048 mm | 30 | 160 in / 4064 mm | Includes kerf and unusable remainder |
| Chair rail | 96 in / 2438.4 mm | Not a no-splice fit | 1 listed pieces/runs exceed this length | Review joints or another supplied length |
| Chair rail | 120 in / 3048 mm | Not a no-splice fit | 1 listed pieces/runs exceed this length | Review joints or another supplied length |
This is a first-fit decreasing packing example, not a claim of the minimum purchase quantity. Profile groups are packed separately; do not combine different actual products merely because they have the same nominal width. End trimming, damaged ends, join positions and fabrication details are not modeled. Stock lengths here are test inputs, not a statement of what the linked kits supply.
Compare ceiling heights on this wall width
Find the height closest to your measured ceiling. Each row recalculates the whole arrangement, including the example’s proportional rail/cap rule and Shaker row count. Open the matching height below the comparison for its complete drawing and cut schedule. Nested-frame outer clear dimensions and the largest uninterrupted inner opening describe different outlines.
| Ceiling | Bays/columns | Outer clear opening width | Outer clear opening height | Net listed trim | 10% allowance | Largest uninterrupted opening area | Trim-face share |
|---|---|---|---|---|---|---|---|
| 8 ft | 7 | 28.929 in / 734.786 mm | 48.5 in / 1231.9 mm | 307.667 linear ft / 93.777 m | 339 linear ft / 103.327 m | 6.996 sq ft | 20.85% |
| 8.5 ft | 7 | 28.929 in / 734.786 mm | 52.25 in / 1327.15 mm | 321.667 linear ft / 98.044 m | 354 linear ft / 107.899 m | 7.606 sq ft | 20.417% |
| 9 ft | 7 | 28.929 in / 734.786 mm | 56 in / 1422.4 mm | 335.667 linear ft / 102.311 m | 370 linear ft / 112.776 m | 8.216 sq ft | 20.035% |
| 9.5 ft | 7 | 28.929 in / 734.786 mm | 59.75 in / 1517.65 mm | 349.667 linear ft / 106.578 m | 385 linear ft / 117.348 m | 8.826 sq ft | 19.695% |
| 10 ft | 7 | 28.929 in / 734.786 mm | 63.5 in / 1612.9 mm | 363.667 linear ft / 110.846 m | 401 linear ft / 122.225 m | 9.437 sq ft | 19.391% |
| 10.5 ft | 7 | 28.929 in / 734.786 mm | 67.25 in / 1708.15 mm | 377.667 linear ft / 115.113 m | 416 linear ft / 126.797 m | 10.047 sq ft | 19.117% |
| 11 ft | 7 | 28.929 in / 734.786 mm | 71 in / 1803.4 mm | 391.667 linear ft / 119.38 m | 431 linear ft / 131.369 m | 10.657 sq ft | 18.869% |
8 ft ceiling: open the drawing and full cut schedule
| Component | Quantity | Length each / run | Measurement basis |
|---|---|---|---|
| Upper horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Upper verticals | 14 | 51 in / 1295.4 mm | Outside long point; 45-degree miters |
| Upper inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Upper inner verticals | 14 | 45.5 in / 1155.7 mm | Outside long point; 45-degree miters |
| Lower horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Lower verticals | 14 | 20 in / 508 mm | Outside long point; 45-degree miters |
| Lower inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Lower inner verticals | 14 | 14.5 in / 368.3 mm | Outside long point; 45-degree miters |
| Chair rail run | 1 | 252 in / 6400.8 mm | Total run; stock lengths and joins to confirm |
Net listed trim: 307.667 linear ft / 93.777 m; rounded 10% allowance: 339 linear ft / 103.327 m. These cuts use the assumptions stated on this page. Confirm the actual profile, supplied lengths, joints and obstacles before ordering.
8.5 ft ceiling: open the drawing and full cut schedule
| Component | Quantity | Length each / run | Measurement basis |
|---|---|---|---|
| Upper horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Upper verticals | 14 | 54.75 in / 1390.65 mm | Outside long point; 45-degree miters |
| Upper inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Upper inner verticals | 14 | 49.25 in / 1250.95 mm | Outside long point; 45-degree miters |
| Lower horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Lower verticals | 14 | 22.25 in / 565.15 mm | Outside long point; 45-degree miters |
| Lower inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Lower inner verticals | 14 | 16.75 in / 425.45 mm | Outside long point; 45-degree miters |
| Chair rail run | 1 | 252 in / 6400.8 mm | Total run; stock lengths and joins to confirm |
Net listed trim: 321.667 linear ft / 98.044 m; rounded 10% allowance: 354 linear ft / 107.899 m. These cuts use the assumptions stated on this page. Confirm the actual profile, supplied lengths, joints and obstacles before ordering.
9 ft ceiling: open the drawing and full cut schedule
| Component | Quantity | Length each / run | Measurement basis |
|---|---|---|---|
| Upper horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Upper verticals | 14 | 58.5 in / 1485.9 mm | Outside long point; 45-degree miters |
| Upper inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Upper inner verticals | 14 | 53 in / 1346.2 mm | Outside long point; 45-degree miters |
| Lower horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Lower verticals | 14 | 24.5 in / 622.3 mm | Outside long point; 45-degree miters |
| Lower inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Lower inner verticals | 14 | 19 in / 482.6 mm | Outside long point; 45-degree miters |
| Chair rail run | 1 | 252 in / 6400.8 mm | Total run; stock lengths and joins to confirm |
Net listed trim: 335.667 linear ft / 102.311 m; rounded 10% allowance: 370 linear ft / 112.776 m. These cuts use the assumptions stated on this page. Confirm the actual profile, supplied lengths, joints and obstacles before ordering.
9.5 ft ceiling: open the drawing and full cut schedule
| Component | Quantity | Length each / run | Measurement basis |
|---|---|---|---|
| Upper horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Upper verticals | 14 | 62.25 in / 1581.15 mm | Outside long point; 45-degree miters |
| Upper inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Upper inner verticals | 14 | 56.75 in / 1441.45 mm | Outside long point; 45-degree miters |
| Lower horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Lower verticals | 14 | 26.75 in / 679.45 mm | Outside long point; 45-degree miters |
| Lower inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Lower inner verticals | 14 | 21.25 in / 539.75 mm | Outside long point; 45-degree miters |
| Chair rail run | 1 | 252 in / 6400.8 mm | Total run; stock lengths and joins to confirm |
Net listed trim: 349.667 linear ft / 106.578 m; rounded 10% allowance: 385 linear ft / 117.348 m. These cuts use the assumptions stated on this page. Confirm the actual profile, supplied lengths, joints and obstacles before ordering.
10 ft ceiling: open the drawing and full cut schedule
| Component | Quantity | Length each / run | Measurement basis |
|---|---|---|---|
| Upper horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Upper verticals | 14 | 66 in / 1676.4 mm | Outside long point; 45-degree miters |
| Upper inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Upper inner verticals | 14 | 60.5 in / 1536.7 mm | Outside long point; 45-degree miters |
| Lower horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Lower verticals | 14 | 29 in / 736.6 mm | Outside long point; 45-degree miters |
| Lower inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Lower inner verticals | 14 | 23.5 in / 596.9 mm | Outside long point; 45-degree miters |
| Chair rail run | 1 | 252 in / 6400.8 mm | Total run; stock lengths and joins to confirm |
Net listed trim: 363.667 linear ft / 110.846 m; rounded 10% allowance: 401 linear ft / 122.225 m. These cuts use the assumptions stated on this page. Confirm the actual profile, supplied lengths, joints and obstacles before ordering.
10.5 ft ceiling: open the drawing and full cut schedule
| Component | Quantity | Length each / run | Measurement basis |
|---|---|---|---|
| Upper horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Upper verticals | 14 | 69.75 in / 1771.65 mm | Outside long point; 45-degree miters |
| Upper inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Upper inner verticals | 14 | 64.25 in / 1631.95 mm | Outside long point; 45-degree miters |
| Lower horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Lower verticals | 14 | 31.25 in / 793.75 mm | Outside long point; 45-degree miters |
| Lower inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Lower inner verticals | 14 | 25.75 in / 654.05 mm | Outside long point; 45-degree miters |
| Chair rail run | 1 | 252 in / 6400.8 mm | Total run; stock lengths and joins to confirm |
Net listed trim: 377.667 linear ft / 115.113 m; rounded 10% allowance: 416 linear ft / 126.797 m. These cuts use the assumptions stated on this page. Confirm the actual profile, supplied lengths, joints and obstacles before ordering.
11 ft ceiling: open the drawing and full cut schedule
| Component | Quantity | Length each / run | Measurement basis |
|---|---|---|---|
| Upper horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Upper verticals | 14 | 73.5 in / 1866.9 mm | Outside long point; 45-degree miters |
| Upper inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Upper inner verticals | 14 | 68 in / 1727.2 mm | Outside long point; 45-degree miters |
| Lower horizontals | 14 | 31.429 in / 798.286 mm | Outside long point; 45-degree miters |
| Lower verticals | 14 | 33.5 in / 850.9 mm | Outside long point; 45-degree miters |
| Lower inner horizontals | 14 | 25.929 in / 658.586 mm | Outside long point; 45-degree miters |
| Lower inner verticals | 14 | 28 in / 711.2 mm | Outside long point; 45-degree miters |
| Chair rail run | 1 | 252 in / 6400.8 mm | Total run; stock lengths and joins to confirm |
Net listed trim: 391.667 linear ft / 119.38 m; rounded 10% allowance: 431 linear ft / 131.369 m. These cuts use the assumptions stated on this page. Confirm the actual profile, supplied lengths, joints and obstacles before ordering.