Our single slide in style placard holders are manufactured out of high quality aluminum or stainless steel with a stainless steel clip to ensure longevity even in the worst conditions. Placard holders have 10 pre-drilled mounting holes for ease of installation. Holder has a formed ramp at the clip to guide placards easily over the clip during removal. Back plate has several raised bumps that keep plastic placards from becoming stuck in the holder during winter weather.