WindsorONE 5/4×5 Trim Board

SKU: N/A

Actual size 1 1/16″ x 4 1/2″. Factory primed finger jointed wood for wider caps, transitional casing and one off details, 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 5
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).S4S (Smooth 4 Sides)S4S (Smooth 4 Sides)Smooth on all four sides with crisp, square edges.

Description

WindsorONE 5/4×5 Trim Board

An uncommon width in an uncommon thickness, which makes it the answer to problems no standard size solves. WindsorONE 5/4×5 measures 1 1/16″ thick by 4 1/2″ wide, and it is built for wider caps, transitional casing and one off details.

The factory applies three coats of acrylic latex before it leaves the mill. Thirty years of cover against rot is unusual for a wood product, and it is the main argument for paying the premium. Being real wood, it takes a finish nail cleanly and fills like timber.

This size comes in S4S and nothing else.

Whatever you cut, seal, or you have undone the factory priming at the one point that matters.

1 1/16″ puts it at the thicker end of our 5/4 stock. Our 5/4×5 boards include 1″ options. For a different width, WindsorONE 5/4×4 is the next size down and WindsorONE 5/4×6 the next size up. More widths in the WindsorONE range, and full dimensions in the board size guide.

Only stocked S4S, so if the detail needs a rough face this is not the board for it.

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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