WindsorONE 5/4×12 Trim Board

SKU: N/A

Actual size 1 1/16″ x 11 1/4″. Factory primed finger jointed wood for deep treads, shelving, bench tops and wide caps, warranted 30 years against rot and insects. See the board size guide for how this compares with our other boards.

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 – 5/4 X 12
Wood SpeciesWood type classification to identify material characteristics.
Board Length16′, 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., S4S (Smooth 4 Sides)S4S (Smooth 4 Sides)Smooth on all four sides with crisp, square edges.

Description

WindsorONE 5/4×12 Trim Board

This is the biggest single piece in the 5/4 range and it behaves more like a panel than a board. WindsorONE 5/4×12 measures 1 1/16″ thick by 11 1/4″ wide, and it is built for deep treads, shelving, bench tops and wide caps.

The primer is already on, three coats of it, applied under controlled conditions rather than in a driveway. It carries a 30 year warranty, which tells you what the manufacturer expects of it. This is wood rather than PVC, so it can be cut, nailed and sanded normally.

Both are stocked, and because the net size matches you can mix them on one building.

Seal freshly cut ends before installation, miters and butt joints included.

Every WindsorONE 5/4 is 1 1/16″. Thickness in our 5/4×12 boards depends on the material. For a different width, WindsorONE 5/4×10 is the next size down. Browse the WindsorONE range for the other widths in this thickness.

Support wide spans at 16 inch centres or it will show a sag within a season.

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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