This is a 36" x 15" round planter to be made by blow molding. The attached jpeg gives all the details. As you can see, the design is tapered to facilitate stacking. The lip of the planter is a standard "hook" design. A photo is attached for clarity. The lid has 1.5" holes spaced 3" apart. The sides of the lid comes extend down 4" as shown on the drawing. The lid is to fit snuggly on top of the planter like the the lid of a shoe box...not too lose and not too tight. The thickness should be 1/8" Richard Bradley