Push-thru Acrylic Signs: This is a sign style using an aluminum cabinet routed to fit acrylic letters that are pushed through the aluminum. The acrylic is internally illuminated with LED lights. Typically the faces of the acrylic will have vinyl applied to them so the light is forced from the sides (returns) of the acrylic, creating a halo effect. This is a great option for halo-lighting very small letters or logos that are two small for reverse channel letters (halo-lit channel letters).