DecoMoldings

inspiration · Nested

F&B Down Pipe Nested Wall Molding

F&B Down Pipe Nested Wall Molding: wall elevation, color data (LRV 13), 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 Down Pipe is a dark gray with a neutral undertone and a calculated LRV of 13. Against white trim the contrast ratio is 5.24:1, which gives clear 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 Down Pipe

Grays sit in the middle of the contrast range: white trim reads clearly, while same-color trim gives a quiet, architectural look.

Wall elevation

F&B Down Pipe 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 Down PipeFarrow & Ball#62666413neutraldark5.24:12.83:1

Trim color pairings

PairingTrim colorHexContrastEffect
tone-on-toneF&B Down Pipe#6266641:1Trim painted the same color as the wall
matching whiteBM Chantilly Lace#F4F6F15.36:1White with the closest undertone
contrastWhite#F4F3EE5.24:1Light 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 Wall Molding Package Kits, 3 Upper & 3 Bottom Nested Frames | Easy Installation01 / KIT

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

From $277.00

View kit
Nested Picture Frame French Trim Wall Molding Kit, 2 Frames, Self-Adhesive Paintable02 / KIT

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

From $110.00

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

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

From $220.00

View kit
Nested Accent Wall Molding Kit, 3 Upper & 3 Bottom Nested Frames | Easy Installation04 / KIT

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

From $180.00

View kit
Nested Frame Pre-Cut Wall Molding Kit for Dining Room, 3 Upper & 3 Bottom Nested Frames | Easy Installation05 / KIT

Nested Frame Pre-Cut Wall Molding Kit for Dining Room, 3 Upper & 3 Bottom Nested Frames | Easy Installation

From $295.00

View kit
Accent Wall Panels Kit, 3 Upper & 2 Bottom Nested Frames | Self-Adhesive Pre-Cut06 / KIT

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

From $220.00

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 Down Pipe warm or cool?

F&B Down Pipe has a neutral undertone and reads as a dark gray. Its calculated LRV is 13, so it absorbs light, so tone-on-tone molding reads as deep relief.

Should trim be the same color as F&B Down Pipe walls?

Painting the molding the same color gives a modern, tone-on-tone finish where only shadows show the pattern. White trim adds clear contrast (5.24:1), and black trim gives 2.83:1.

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