24"x18" Slide-in Real Estate Sign H-Frame With Rider 24" wide x 18" tall Slide-In Angle Iron Real Estate Sign Frame with a 6" rider space You can slide in 4mm coroplast sign or you can bolt on your an aluminum sign if you prefer a more permanent installation. 3/4" angle iron construction with a Black finish Easy slide-in panel installation 42" Height - Holds up to 1/4" thick sign