What is the Weber Charcoal Grate 18″?

The Weber Charcoal Grate 18″ is the lower or fuel grate designed to support charcoal or briquettes inside Weber 18″ kettle-style grills. It sits below the cooking grate and allows for airflow from below to aid combustion.

What are the specifications—size and material?

The official Weber char grate for 18″ grills (Part #7440) is constructed from heavy-gauge steel and measures about 13.5″ in diameter when installed.

Which Weber grills is it compatible with?

This grate fits 18″ Weber kettle grills, including the One-Touch, Bar-B-Kettle, Jumbo Joe, and Smokey Joe Platinum models.

How do I install or replace the charcoal grate?

Remove the old grate and any ash or debris in the bottom of the kettle. Then drop the new grate down, resting it on the internal supports or ledges just above the bottom vent. Ensure it sits level and stable before adding fuel.

How should I maintain and clean this charcoal grate?

Once the grill is fully cooled, brush off ash and residue. Occasionally, you can wash it with warm soapy water and a soft brush, then dry thoroughly. Avoid harsh abrasives that could damage the steel. Over time, some patina or surface oxidation is expected.

Are there common issues or limitations I should know?

Because the grate is steel and exposed to heat and moisture, it may eventually warp or corrode. Also, the fit must be snug—if the grate is too loose, it can shift under weight, and a poor fit can reduce airflow efficiency. If the grate becomes heavily warped, thin, or cracked, it’s best to replace it.