IKAYAS 18x24 White Corrugated Plastic Boards - 10-Pack, 4mm Double-Sided Sign & Project Sheets

These IKAYAS 18 x 24 inch white corrugated plastic boards are sturdy, double-sided sheets designed for signs, school projects, and reusable outdoor displays.

Lightweight yet rigid, these corrugated plastic sheets give you a clean white surface that resists moisture and handles short-term outdoor use. Each sheet measures 24 inches long by 18 inches high and is made from 4 mm-thick corrugated polypropylene, offering a balance of durability and ease of cutting. The pack configuration included in this listing provides multiple boards so you can plan events, classroom projects, yard signage, and art layouts without immediate restocking.

How will these boards hold up outdoors?

The IKAYAS corrugated plastic material is water-resistant and stays flat in damp conditions, making it suitable for temporary outdoor signs like yard sales or open houses. Avoid prolonged exposure to extreme heat or open flames, and store flat to prevent warping.

• 4 mm corrugated polypropylene resists rain and light moisture
• Double-sided white face for printed or hand-lettered messages
• Lightweight for easy mounting on stakes, frames, or tape

What sizes, thickness, and pack details should I expect?

Each sheet measures 24 inches (length) by 18 inches (height) with a 4 mm thickness for structural rigidity without excessive weight. The retail package is offered as multiple packs so you receive enough sheets for several signs or projects.

• Dimensions: 24" x 18" (61 cm x 45.7 cm)
• Thickness: 4 mm corrugated core
• Color: solid white on both sides for greater versatility

How can I customize and use these boards for projects or events?

The smooth surfaces accept paint, permanent markers, vinyl decals, and direct-printed graphics. Their stiffness makes them easy to cut with a utility knife, and the corrugation allows for light hardware such as ties or wire to secure signs in place.

• Cut cleanly with a sharp utility knife or scored and snapped along a ruler
• Compatible with spray paint, acrylics, markers, and adhesive vinyl
• Mounting: grommets, zip-ties, staples, or coroplast stakes for quick installations

Are these boards reusable and eco-conscious?

Yes — when used and stored properly these corrugated sheets can be reused many times for rotating displays or seasonal events. They are lightweight and reduce the need to buy single-use paper posters for short-term signage.

• Wipe-clean surfaces for reuse after events
• Durable enough for multiple campaigns and classroom seasons
• Store flat to prolong life and preserve print or hand-painted work

Who is this for: These IKAYAS corrugated plastic boards suit teachers, event organizers, small business owners, real estate agents, campaign volunteers, and craftmakers who need reliable, weather-resistant signage and blank canvases. If you make yard signs, seasonal promotions, school displays, or DIY poster projects and want affordable, reusable white boards, these sheets offer a practical solution.

Note: Keep boards away from open flames and extreme heat. For any product questions or support, contact IKAYAS customer service.