RMS Snap Frame or Clip Frame load from the front and allow quick changes of your posters and notices. All four of the frame sides have a spring-loaded hinge which closes shut under tension - simply pull up each side, place your poster inside the frame, cover your poster with the included PVC or polycarbonate protective cover and 'snap' each side back. The PVC cover prolongs the life of your poster and enhances the look of your display.