The best 11 x 17 foam board depends on your project: Golden State Art and Mat Board Center offer white boards for general displays, while the black Mat Board Center option suits projects that need a dark surface. For bulk white backing boards, consider the 25-pack. Silverlake’s half-inch sheets are better for dimensional craft and model work than for standard paper-faced foam core.
| Product | Best For | Key Difference |
|---|---|---|
| Golden State Art White Foam Boards | General projects | 12-pack, acid-free |
| Mat Board Center White Foam Boards | Lightweight displays | Rigid, smooth white surface |
| Mat Board Center Black Foam Boards | Dark-background projects | Black surface |
| Silverlake Craft Foam Boards | Model making | Half-inch dense EPS foam |
| Mat Board Center 25-Pack | Bulk backing needs | 25 white boards |
Golden State Art White Foam Boards
These 11 x 17-inch white foam core boards are 1/8 inch thick and come in a 12-pack. The polystyrene foam core is covered with matte white paper, and the boards are described as durable and acid-free. That combination makes them a practical choice for posters, displays, paintings, modeling, and other projects that need a clean white surface.
Best for: Buyers who want a multipurpose pack of standard-size white boards. Choose this if the matte paper finish and acid-free construction fit your project. The listing does not specify a cutting tool or mounting method, so plan those separately.
Mat Board Center White Foam Boards
This 12-pack contains white 11 x 17-inch foam core boards with a 1/8-inch, or 3 mm, thickness. The product is described as acid-free, lightweight, strong, and rigid. It is a straightforward option for school work, presentations, signs, and display backing when a standard white board is preferred.
Best for: Buyers looking for lightweight boards with a rigid surface in a familiar size. It has similar stated dimensions and pack quantity to the Golden State Art option. The supplied details do not identify the paper finish or construction layers, so compare those points if surface texture matters.
Mat Board Center Black Foam Boards
These boards match the white Mat Board Center option in size, thickness, and quantity: 12 boards, each 11 x 17 inches and 1/8 inch (3 mm) thick. They are black, acid-free, lightweight, and described as strong with a rigid surface. The dark color offers a different visual starting point for signs, presentations, crafts, or display work.
Best for: Projects that call for a black background or dark exposed edges. Choose this over a white board when the board color is part of the design. The listed features do not describe a white reverse side, so do not assume the boards are two-tone.
Silverlake Half-Inch Craft Foam Boards
Silverlake’s six-pack measures 11 x 17 inches, but these sheets are 1/2 inch thick and made from dense EPS foam rather than standard 1/8-inch paper-faced foam core. The product is intended for precision craft and model projects. Its features say it can be sanded, shaped, painted with water-based paint, and cut with a hot-wire knife.
Best for: Model makers, scenic designers, and crafters who need thicker material for layered work, diorama backgrounds, or architectural model bases. Avoid this option if you need a thin, smooth paper-faced board for ordinary poster mounting; its thicker EPS construction serves a different purpose.
Mat Board Center 25-Pack White Boards
This bulk option includes 25 white foam core backing boards, each 11 x 17 inches and 1/8 inch (3 mm) thick. The boards are described as acid-free, lightweight, and rigid, with a smooth surface. Compared with the 12-packs in this selection, its main distinction is the larger quantity for repeated projects or a supply of matching-size backing boards.
Best for: Buyers who need multiple white boards for ongoing craft, display, or backing work. The smooth surface and rigid construction are useful features when a consistent finish matters. It is a larger pack, so it may be unnecessary for a one-time project that needs only a few boards.
Buying Guide: How to Choose 11 x 17 Foam Board
Which thickness fits your project?
For standard display and backing uses, the listed 1/8-inch boards are the thinner foam core choices in this selection. Silverlake’s 1/2-inch sheets are substantially thicker and designed for shaping and dimensional work. Check thickness before ordering; matching dimensions alone does not make these materials interchangeable.
Should you choose white or black?
White is a versatile surface for presentations, signs, and general projects. Black is a better fit when a dark background is part of the design. Consider whether the board’s exposed edges will show, and select a surface color that suits the finished display.
How many boards do you need?
The 12-packs suit moderate project needs, while the 25-pack provides more same-size white boards for repeat use. Silverlake’s six-pack is intended for thicker craft foam. Compare quantity alongside thickness and surface type rather than choosing by pack size alone.
What does acid-free mean for selection?
Several standard foam core listings identify their boards as acid-free. This may be relevant when choosing backing for art or display projects. Review the product details for the specific board you intend to use, and do not assume every foam sheet in this comparison has the same surface or composition.
Frequently Asked Questions
What are the dimensions of an 11 x 17 foam board?
The standard boards in this selection measure 11 inches by 17 inches. Silverlake also lists 11 x 17-inch sheets, but its product is a thicker craft foam material.
Is 1/8-inch foam board suitable for posters?
The listed 1/8-inch foam core boards are intended for uses including displays, signs, projects, and backing. Confirm that the thickness meets your project’s support needs.
Can the Silverlake sheets replace standard foam core?
Not in every use. They are 1/2-inch-thick dense EPS craft sheets, while the standard foam core options are 1/8 inch thick and described as rigid boards. Choose based on whether you need a shaped, dimensional material or a thin display board.
Which option is best for buying in bulk?
The Mat Board Center 25-pack provides the largest quantity of standard-size white boards among these selected products. The 12-packs are alternatives for buyers who need fewer boards.