Cardboard needed for Targets

We can always use cardboard  for our targets.
 
What size you ask?
Target                   Size Cardboard Needed
Bird                        17” x 35”
12”                         15” x 31”
18”                         21” x 21”
24”                         27” x 27”
 
Cardboard should be corrugated and ideally cut to size…………….
               
We do not need or want random pieces, but keep your eye out for some nice piles of stuff that can be cut down!