Below are some instructions to mount a poster into the frame.
Steps to remove the back of a picture frame:
1. Remove packaging from the frame and locate the small metal tabs on the back of the frame.
2. Bend the tabs through 90º
3. Once all the tabs have been lifted out of the way, the rear of the frame can be removed and the picture inserted into the frame. Replace the back of the frame and bend the tabs back down to hold the frame in position.