Perfect Mount is a 14 millimetre thick mounting board with double-sided adhesive for mounting pictures and photographs The board is made of acid-free and PH-neutral materials for the best possible preservation of your pictures The glue on the plate is activated by pressure meaning that you can put your picture on it remove it and move it around until youre satisfied To remove any bubbles you can wipe the surface of the picture with a soft cloth or cotton glove starting from the centre and working your way outwards Then apply pressure to the board to attach the picture permanently