My first adaptation was a pet barrier. I found a panel of VersaPad at a local Theisen’s farm supply store for about $20. The overall size is 4ftx 2ft and it is large enough to make 2 pet barriers. VersaPads are made of a plastic with 1 1/8†o. c. grid. They are easy to cut with a straight blade hand saw or a table saw.
This picture shows two versions. On top is the final version which provides better rear view vision than the first version at the bottom. You may count out the squares to copy the design. The top version is 8 squares high. The top corners are cut by 4 squares in the top row and 2 squares in the second row. The rear view slots are 2 squares high and 13 squares wide, the lower slots are 7 squares wide.