WindsorONE 2×12 Trim Board

SKU: N/A

Actual size 1 7/16″ x 11 1/4″. Factory primed finger jointed wood for stair skirts, deep skirt boards and heavy trim, warranted 30 years against rot and insects. See the board size guide for how this compares with our other boards.

Actual size — nominal 2x12 3 options
SpeciesProfileThicknessWidthCode
MDF unprimed — 1 1/4" 11 1/4" 2X12MDF
WindsorONE Protected 16ft & 20ft S1S2E 1 7/16" 11 1/4" 2X12RPS1S2E
Flexible FJP — 1 7/16" 11 1/4" 2X12FLXFJP

2 different thicknesses at 2x12: 1 1/4", 1 7/16". Check the species before butting materials together.

Note: Mouldings sold per linear foot (LF) are subject to lengths on hand. If special lengths are required, please contact our stores for an inventory check. Order the total quantity of LF desired and an order equaling that total will be assembled.

Shipping and returns

We offer free next-day delivery on orders over $300 within a 50-mile radius of any of our stores. For orders less than $300 within our radius, we charge a $65 delivery fee. For delivery sites outside of our 50-mile radius, we charge a $250 delivery fee, regardless of the amount purchased. Please click here to view a map of our delivery radius.

Product details

Nominal SizeWOS1 – 2 X 12
Wood SpeciesWood type classification to identify material characteristics.
Board Length10′, 16′, 20′, 4″ sample, 8′
Edge ProfileShows whether the board edges are square (sharp) or eased (rounded).S1S2E (1 Side Smooth, 2 Edges Eased)S1S2E (1 Side Smooth, 2 Edges Eased)Reversible, 1 rough sawn side, the rest smooth with 2 eased edges.

Description

WindsorONE 2×12 Trim Board

Nothing else in the range is this big, and very little else needs to be. WindsorONE 2×12 measures 1 7/16″ thick by 11 1/4″ wide, and it is built for stair skirts, deep skirt boards and heavy trim.

The joints are what stop it cupping, and they disappear under primer. It ships factory primed on all faces with three coats of acrylic latex. The warranty runs 30 years against the three things that finish off exterior wood.

There is one profile in this size, S1S2E.

Stocked long, 16ft and 20ft, which suits elevations that would otherwise need splicing.

Field cuts want a coat of primer before they see weather.

At 1 7/16″ it matches the rest of our 2x range, including 2×12 boards, but not construction lumber. If the width is not right, WindsorONE 2×10 is the next size down. The board size guide is the quickest way to confirm this is the width you want.

Handle it two people up. A 20ft 2×12 is heavy enough to crack if you flex it, and a cracked primed board is scrap.

WindsorONE is a premium line of trim boards, mouldings, and specialty millwork known for exceptional craftsmanship, architectural accuracy, and consistently smooth finishes. Every board is precision‑milled, primed, and built to deliver long‑lasting performance for interior and exterior applications. Contractors choose WindsorONE for its reliability, crisp profiles, and superior paint adhesion.

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Nominal vs actual size

Why a 1x4 is not four inches wide, and what you will really receive.

Board size guide

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