Ken M Great Falls , MT February 16, 2020 Appliance: Frigidaire Refrigerator NFTR18X4LW6 Frigidaire Refrigerator Nftr18x4lw6: Worn/cracked shelving. How to replace Refrigerator Glass Shelf With Frame. Replaced two Spill-Safe shelves and the Crisper Pan Cover. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes