Lastolite LL LS2920 Creative Masking Strips for 2462 Ezybox Description. This Lastolite set of Creative Masking Strips for the 21 54 cm Easybox Hotshoe means that you can fashion patterns like louvered blinds or selectively mask off parts of the Easyboxs light output. They affix to the Easybox quickly via touch fasteners.