1-- 1 x 2" Wood (anything of your choice, pine would also work)
2 elbow brackets
screening material about 4-6" wider than your door frame
staples and staple gun
I should have taken more pictures but I was in a hurry to get this done as I was also working on another project that I will be posting soon (it's not done yet). I laid the screening material out and measured how long that I wanted it, don't include the wood or where you will add the weights. I then folded a portion of the bottom twice and sewed a seam, this area is for the weights. I then cut it in half length wise for the opening. Since mine is a double door and we like to open both during the summer, cuz it gets smokin' hot in our house, I cut it where the door handles are. Here is where I blew it, so don't do my mistake. You need the two pieces to overlap when you attach it. That is why the 6" larger than your door frame. You need it to overlap the frame of your door on the sides and to over lap by at least two inches in the middle. I am going to add a strip down the middle to take care of the problem. Lay the wood at the top of the screen with excess screen to the right of the wood, have the side you want facing out be face down. See the picture below. The bulk of my screen was to the left in this picture. See the bottom right arrow, it shows the excess screen beginning to fold over. From the left of my wood, my length was 81 1/2" because I wanted it hanging below my door as there is a step and I knew it would help the dog. Now, make your first row of staples so that it stays in place. Now grab the excess and fold it back so that the fold is where I have the dark line below, staple it again all the way across. Do this again by folding it back, followed by one more. After each fold, I stapled it. I left the excess to help with blocking the flies.
Hope this wasn't too confusing!