I have been using cardboard for pads for many years but over time the results have been mixed (cardboard shrinks over time). I bought these pads when my front door wouldn't close again. The crossbar crashed under the hole in the door frame. I removed the board standoffs and replaced them with two EZ-SHIMS standoffs. The door closes normally again. I don't see EZ shims shrinking like cardboard. The only small issue (not really a problem for me) is that you'll probably have to trim them off as they aren't the right shape for most new stitches. Two corners need to be trimmed to allow the EZ shims to fit the rounded corner hinge groove. This is easy to do with scissors.
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