OK, I created a Flickr page and uploaded photos of this cold frame, and set the access to public. We used 2 inch thick styrofoam insulation, pressure treated wood outside, exterior marine plywood inside for the box. I will paint it, inside and out, in warmer, drier weather later this year, and primed only the top sections before they went into use this week. Tie downs for the sections to keep them on in heavy winds were installed yesterday. Still to come: another 6 inches of gravel inside, to ensure good drainage, and wedges to hold sections open during warmer weather, i.e. above 40 F, and a thermometer. At temps above 50 F, the tops will come off and be stored, unless I am using this frame to keep pots dry. Final dimensions are 4 ft x 12 ft x 2 ft deep. It's this deep because I plan to put 5 gallon buckets in it. I plan to get a roll of insulating cloth to lay over plants when temperatures below 25F are due, and will probably put a tarp over the top as well during heavy snowfalls. http://flickr.com/photos/n7ong-photos/… Now I can move all those pots out of my dining room too, and start eyeing those bulbs that like dry cool winters. And contemplate the next cold frame location, for smaller pots. Kathleen