Product review (5 stars): Can't live without them now!
I was extremely skeptical before I tried these but delighted after use at how wonderfully they just wipe clean!  The center openings were just a series of slits when they arrived.  I put one on, turned on the burner and it lit up!  I turned off the burner, removed the protector, cut away the slotted part that was laying over the burner and after putting it back, turned on the burner again.  Note; I had my fire extinguisher 2 ft away!  No flame this time.  I cut out the other 3 protectors and LOVE them. I have cooked spillover almost daily but I no longer stress, knowing how easily these clean up!  I highly recommend these range protectors!