I am one happy camper. I've really wanted to keep my GH gardening as organic as possible but containers have been a problem -- so many "unhealthy" ones out there. I bought this plastic storage bin at Home Depot just before Christmas for around $5, to keep some extra "stuff" in. It has a red lid. Today I turned it upside down and read the markings. USA made (gives the date of mfg in the circles) - and "PP" for recycle. I looked that up and listed below what it says on the Livestrong site. I'm going to buy more and cut them down to the right height, use the red lid as a tray, and almost fill each shelf in the GH rack with a planter. Whoohoo ! Back to Home Depot to get more before they're gone ! These are about 15" height by 25 long (narrow at the bottom), and about 15" across.
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From Livestrong site:
"PP stands for polypropylene, a strong plastic mostly used in caps and lids. You can identify polypropylene by a triangle and the number 5 on the bottom of your container, although many lids do not include this "resin number". PP has a high melting point and can be "hot-filled" or used with products that need to incubate. It also does not transmit any known chemicals into food. This makes it an ideal material for a garden container, though large PP containers may be hard to find."