HP Production Coroplus Board 18" x 12", 25 Sheets The HP Production Coroplus Board 18" x 12" Pack is a pre-cut 4 mm corrugated polypropylene sign board engineered for fast, economical production of short-term outdoor signage. Designed exclusively for HP PageWide XL Pro printers , this matte-finish board features a specialized ink-receptive coating that delivers vibrant color, instant-dry performance, and outstanding productivity without the need for a flatbed printer. Lightweight yet durable, it can be mounted on traditional H-stakes or grommeted for hanging signs. Key Features 18" x 12" pre-cut boards, 25 Sheets/Pack 4 mm (177 mil), 990 gsm corrugated polypropylene board Double-sided printable with matte finish Instant dry with HP PageWide XL pigment inks Durable, lightweight and easy to transport REACH compliant Optimized for HP PageWide XL Pro printers Ideal For Ideal for print service providers, sign shops, reprographic firms, and commercial printers producing lawn signs, real estate signs, construction signage, election signs, retail promotions, event signage, and other short-term outdoor graphics.