What is the width and the length?
Answer Alex, the door gasket WR24X523 is 31 1/4" x 67". Searching your model FP21SSCRWH, this is the correct manufacturer replacement listed for your product. Thanks!
Does this gasket come with everything for installation?
Answer Hello Brad. Yes, the gasket WR24X523 comes with everything you need to install it, if the old one is installed and nothing on the door is broke. Hope this helps.