This sale is for two (2) sets of vent strips. Pic #1 times two (12 strips plus 24 thumb tacks). BOXES, TOPS, BOTTOMS AND ENTRANCE NOT INCLUDED. After I made the sliding gate entrance, it occurred to me tops could be used for bottoms, only thing, tops aren’t vented. Since many people may not have tools like hole saws etc to make the openings and then staple guns to attach the mesh to the vent, I designed these vent strips to simply attach between the box and the top/bottoms with thumb tacks. Also I got tired of always having to find the nails or shims that fell on the ground when I took off the lids to look in on my bees. They are made from re-grind ABS so color will vary. Only two thumb tacks are needed to hold each one in place, but extra holes are provided to avoid knots. I do my best to design all my beekeeping products without the need for tools. They are made in Anaheim California. Spehar Products, imagination + unfair advantage.