I got 3 of these planters and placed them by my garage doors. They are very light weight and easy to maneuver. It takes a little elbow grease to pop out the square divider inside the planter but I finally got them out to put the sand in the bottom. Just when you think you might break the planter, the divider pops out for you. Don’t be afraid of it! 
I put some sand in the base to weigh it down  put the holes in the bottom and on the side (as recommended in the instructions). The flowers were planted first week of July and by the end of the month they look like this. They look great...adds a pretty accent when we pull in to the garage! I’m wanting to do mums this fall.. perhaps something for spring. I’m afraid I’ll have to take the planters inside the shed during winter (although I’d love to do a winter arrangement in them) because I’m afraid they’ll crack in the cold temperatures. Very pleased with them.