Yard Signs 6mm

6mm coroplast yard signs — half again as thick as standard, for signs that stay out longer and stand up to more wind. Full color on corrugated plastic in 18 sizes, with eight grommet patterns, single or double-sided printing and optional H-stakes. Same-business-day production available.

• 6mm coroplast — noticeably stiffer than 4mm, resists flexing and corner damage
• Built for longer campaigns — seasonal promotions, construction sites, multi-month listings
• 18 sizes from 6" x 24" rider strips to 48" x 48" panels
• Eight grommet patterns plus a no-grommet option for stake mounting
• Same-day production available

Choose your print sides

• Printed 1 sided (4/0) — color front, white back, for signs mounted flat against a surface.
• Printed 2 sided (4/4) — different artwork on each face, for opposite directions of traffic that need different messages.
• Printed 2 sided — same image — identical both faces, the standard for freestanding signs seen from two directions.

Choose your grommet pattern

• No grommets — the right choice for stake mounting; the stake slides into the flutes.
• Top 2 corners — hanging from hooks or a railing.
• All 4 corners — zip-tied flat to a fence so wind cannot lift the sign.
• Real estate top only / top and bottom — sized for standard hanging frames and rider strips.
• Every 2–3 feet on top and bottom, on sides, or all around — for larger panels lashed along a fence line.

When 6mm is worth the upgrade over 4mm

Thickness in coroplast is mostly about stiffness, not durability of the print. A 4mm sign at 24" x 36" will visibly bow in a steady wind; the same sign in 6mm holds its plane. That matters in three situations: large sizes, exposed sites, and signs that get taken down and put back up repeatedly. Construction fencing, seasonal roadside advertising, sports field sponsor boards and long-running real-estate listings all justify the step up.

If your signs go out for a weekend and come back in, 4mm saves money with no practical downside. For year-round installation or heavy wind exposure, go to 8mm or 10mm.

Designing for outdoor reading distance

Allow roughly 10 feet of readable distance per inch of capital letter height. Keep the message to a headline, one supporting line and a phone number or QR code. Use high contrast — dark type on a light field or the reverse — and avoid photographic backgrounds behind text, which destroy legibility at speed. Build files at 100–150 DPI at full size in CMYK, with 0.125" bleed.

Specs at a glance

• Material: 6mm corrugated plastic (coroplast)
• Printing: full color, 1 sided (4/0) or 2 sided (4/4)
• Sizes: 18 options, 6" x 24" through 48" x 48"
• Grommets: 8 patterns, or none for stake mounting
• H-stakes: available as an add-on
• Turnaround: same business day or 4–5 business days

6mm Yard Signs FAQ

Thickness, mounting and weather questions are answered below.