Safco Products 4230MO Wood Locking Suggestion Box, Medium Oak Wood suggestion box, drop box, deposit box, prize drawing box, etc. Slot size 5 3/8"W x 1/4"D accepts suggestion cards (25 suggestion cards included) Lockable, includes lock and 2 keys Furniture grade wood construction, wall mounting hardware and template included Safco Products Suggestion Box Refill Pack Model 4231 available, sold separately