Main Advantages:

the weatherproof outdoor frames are designed to protect your posters from rain and dust, making it the perfect choice for outdoor uses.
these lockable weather resistant poster signs are what you are looking for in a lockable frame with the quality and elegant look they provide at a reasonable price to display large and medium size artwork in open spaces.
You can easily change your advertisements, posters, photos and artwork in these lockable weatherproof picture frames by just removing the single lock on the bottom which makes this locking poster board ideal to use outdoors.