DecoMoldings

inspiration · Nested

F&B French Gray Nested Wall Molding

F&B French Gray Nested Wall Molding: wall elevation, color data (LRV 43.6), living room layout for 12, 15, 18 ft walls, cut list, calculator and pre-cut kits.

Catalog snapshot View 2 sources ↓

Project calculator

Wall molding linear-foot estimate

Estimate for rectangular molding frames.

Estimated quantity122.28 linear feet

Divide by 7.87 ft (240 cm stick) and round up for the number of sticks.

Formula & assumptionsframe_count * 2 * (frame_width_inches + frame_height_inches) / 12 * (1 + waste_percent / 100)

Assumes identical rectangular frames. The waste allowance is editable. The estimate does not optimize cuts or include separate rails, baseboards, or other trim.

Overview

F&B French Gray is a light green with a green undertone and a calculated LRV of 43.6. Against white trim the contrast ratio is 1.94:1, which gives soft contrast; painted tone-on-tone, the nested pattern shows only through its shadow lines.

Nested layout on a 15 ft living room wall

Molding over the full wall height, upper and lower rows divided by a chair rail. On a 15 ft wall with an 8 ft ceiling this gives 5 frames per row, each 31.2 in wide, with 50 in upper and 21 in lower frames. The layout uses about 70.63 m of 2.5 cm molding, or 30 sticks of 240 cm, including 10% waste. Center the layout on the sofa or TV rather than the wall when furniture is off-center.

Building the nested pattern

Fix the outer frames first, then set each inner frame 4 in inside with spacer blocks so the reveal is identical on all four sides. Both frames use the same 2.5 cm profile.

Painting molding in F&B French Gray

Greens are the most popular color for tone-on-tone molding walls: the shadows of the frames add depth without breaking the color.

Wall elevation

F&B French Gray wall, tone-on-tone trim, nested layout on a 15 ft wall. Colors are screen approximations.

Color data

ColorBrandCodeHexCalculated LRVUndertoneDepthContrast vs white trimContrast vs black trim
F&B French GrayFarrow & Ball#B5B19A43.6greenlight1.94:17.63:1

Trim color pairings

PairingTrim colorHexContrastEffect
tone-on-toneF&B French Gray#B5B19A1:1Trim painted the same color as the wall
matching whiteCream#F2E8D21.77:1White with the closest undertone
contrastWhite#F4F3EE1.94:1Light trim for crisp contrast

Living Room wall sizes: nested accent wall layout

Wall widthFrames per rowFrame widthFrame height (upper / lower)Molding incl. 10% waste240 cm sticksChair rail pieces (300 cm)
12 ft431 in50 / 21 in56.33 m242
15 ft531.2 in50 / 21 in70.63 m302
18 ft726.3 in50 / 21 in90.19 m382

Cut list for a 15 ft wall

Planning cut list
PieceQuantityLength
Frame top and bottom (lower row)1031.2 in
Frame sides (lower row)1021 in
Frame sides (upper row)1050 in
Frame top and bottom (upper row)1031.2 in
Inner frame pieces4023.2 in / 13 in
Chair rail2300 cm lengths

Pre-cut kits for this wall

Pre-cut kits that fit this project. Open a kit for photos, options and pricing.

Nested Picture Frame French Trim Wall Molding Kit, 2 Frames, Self-Adhesive Paintable01 / KIT

Nested Picture Frame French Trim Wall Molding Kit, 2 Frames, Self-Adhesive Paintable

From $110.00

View kit
Instant Nested Frame Wall Trim Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Quick Easy Installation02 / KIT

Instant Nested Frame Wall Trim Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Quick Easy Installation

From $333.00

View kit
Self Adhesive Accent Wall Molding Kit, 3 Upper and 2 Bottom Nested Frames | Pre-Cut & Primed03 / KIT

Self Adhesive Accent Wall Molding Kit, 3 Upper and 2 Bottom Nested Frames | Pre-Cut & Primed

From $220.00

View kit
Wainscoting Accent Wall Molding Kit, 3 Upper and 2 Bottom Nested Frames | Pre-Cut & Primed04 / KIT

Wainscoting Accent Wall Molding Kit, 3 Upper and 2 Bottom Nested Frames | Pre-Cut & Primed

From $220.00

View kit
Nested Wall Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Easy Installation05 / KIT

Nested Wall Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Easy Installation

From $277.00

View kit
Nested Accent Wall Molding Kit, 3 Upper & 3 Bottom Nested Frames | Easy Installation06 / KIT

Nested Accent Wall Molding Kit, 3 Upper & 3 Bottom Nested Frames | Easy Installation

From $180.00

View kit

Questions

How much molding do I need for a 15 ft living room wall with nested frames?

About 70.63 m (232 linear ft) including a chair rail and 10% waste, which is 30 sticks of 240 cm. That assumes 5 frames per row, 31.2 in wide, on an 8 ft ceiling.

Is F&B French Gray warm or cool?

F&B French Gray has a green undertone and reads as a light green. Its calculated LRV is 43.6, so it sits in the mid range, where molding shadows show clearly.

Should trim be the same color as F&B French Gray walls?

Painting the molding the same color gives a modern, tone-on-tone finish where only shadows show the pattern. White trim adds soft contrast (1.94:1), and black trim gives 7.63:1.

How high should the chair rail be in a living room?

About one third of the ceiling height: 32 in on an 8 ft ceiling, 36 in on 9 ft and 40 in on 10 ft. Center the layout on the sofa or TV rather than the wall when furniture is off-center.

Trace the details

Sources & dates

Prices, options and photos come from our product catalog on the date shown. Layout tables are planning estimates; measure your wall before ordering.

  1. Paint color dataset (screen approximations; LRV calculated)Recorded November 11, 2026
  2. DecoMoldings product catalogRecorded November 11, 2026