Traditional Keystone (Fits Casings up to 13/16 x 2 1/2 - 3 1/2), 4"w x 4 1/2"h x 1"d｜ Other Products

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White River Hardwoods · Millwork Accessories
Traditional Keystone

SKU KEY031-POPLAR · 4″ w × 4-1/2″ h × 1″ d
Solid Poplar · Milled in Fayetteville, Arkansas · Unfinished

Traditional Keystone at 4″ w × 4-1/2″ h × 1″ d, milled from kiln-dried Poplar. Sits at the head of a door or window casing where the two legs meet — a keystone replaces the mitered joint and adds a focal point. Fits casings up to 13/16 x 2 1/2 - 3 1/2.

Made in the USA · Kiln-Dried Poplar · Ships Unfinished

The blocks are where a trim job stops looking assembled and starts looking designed.

Product Details
Dimensions

SKU
Dimensions
Fits Casings
Material

KEY031-POPLAR
4″ w × 4-1/2″ h × 1″ d
up to 13/16 x 2 1/2 - 3 1/2
Poplar

Why a Block
One Square Cut Instead of a Miter

⊢
No Miters
Casing or crown runs butt square into the block. Out-of-square openings stop showing.

✦
Sized to the Casing
Proportioned to the casing widths it pairs with, so the reveal works without shimming.

◇
Paint or Stain
Poplar ships unfinished; prime and paint with the trim, or stain to match.

⊕
Same Lumber as the Mouldings
Milled from the same NHLA-graded, kiln-dried stock as the moulding collections.

Technical Specifications
Key Facts

SKU
KEY031-POPLAR

Type
Keystone

Width
4″

Height
4-1/2″

Depth
1″

Fits Casings
up to 13/16 x 2 1/2 - 3 1/2

Material
Kiln-Dried Poplar

Finish
Unfinished

Made In
Fayetteville, Arkansas

Installation
Step by Step

1
Set the Block First
Position and level the block, glue and pin it into framing.

2
Cut Runs Square
Measure to the face of the block and cut the moulding at 90°.

3
Butt & Fasten
Glue the mating edge, slide the run into the block, nail into framing.

4
Fill & Finish
Fill nail holes, sand, prime, and paint or stain with the trim.

Trade Program
38% Trade Discount for Design Professionals
Architects, interior designers, builders, and contractors receive 38% off list on hardwood mouldings and accessories. Apply once and your account is set for every order.

Apply for Trade Access

KEY031-POPLAR — Traditional Keystone. Milled by White River Hardwoods.

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Brand:White River HardwoodsCategory:AccessoriesSKU:KEY031-POPLARTags:AccessoriesWood Species:Poplar