Robert Dennis C Weslaco , TX January 18, 2016 Appliance: Frigidaire Gas Range FGF337GWB Frigidaire Range Fgf337gwb: Gas range top grates were flaking off the coating and starting to rust so they needed to be replaced. How to replace Grate Kit. Ordered the replacement grates and they just drop into place. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes