Wholesale Acrylic Push-Through Letters Acrylic Push-Through Letters

Cast acrylic is the material of choice for push-through letters because of its superior optical clarity, structural integrity, and long-term weatherability — critical for the LED-illuminated push-through format. Unlike extruded acrylic, which is manufactured by pushing material through a die, cast acrylic is formed in individual molds — a process that yields a denser, more uniform sheet with fewer internal stresses. This matters enormously in push-through sign applications, where the acrylic must transmit LED light evenly while resisting cracking, crazing, and UV degradation over years of outdoor exposure.

At Sunlite Signs, we source our cast acrylic exclusively from tier-one manufacturers including Plexiglas, Acrylite, and Lucite. Every sheet meets or exceeds ASTM D4802 standards for optical quality and weatherability. We CNC-route each letter from solid cast sheet stock — never laser-cut, which can introduce micro-stresses along the cut edge that lead to crazing over time.

The result is a push-through letter with crystal-clear edges that transmit light beautifully when backlit, and a face surface that resists yellowing even after years of direct sun exposure. For sign shops, specifying cast acrylic push-through letters means fewer warranty callbacks and happier end clients — a combination that protects your reputation and your margins.

The performance of a push-through sign depends entirely on the relationship between the acrylic letter and the routed panel. At Sunlite Signs, we engineer both components as a matched set. Our CNC programs account for material kerf — the same precision routing used for aluminum flat cut letters, thermal expansion coefficients, and the specific interference fit needed to hold the letter securely without relying solely on adhesive.

Panel options include:

• Flat aluminum panels: 0.125" or 0.188" aluminum sheet, ideal for flush-mount wall installations or integration into existing sign cabinets.
• Cabinet-mounted panels: The routed face panel is welded or fastened to an aluminum cabinet that houses the LED system and power supply. This is the most common configuration for illuminated push-through signs.
• Composite panels: ACM (aluminum composite material) panels can be used for non-illuminated applications where weight savings are a priority.

We apply a bead of industrial-grade silicone adhesive around each letter perimeter during final assembly to create a permanent, weather-tight bond. This adhesive is UV-stable and rated for temperatures from -40°F to 300°F, ensuring the letters stay seated through freeze-thaw cycles, thermal expansion, and high-wind events. Every completed assembly is inspected under our quality control protocol before it ships to your shop.