Grill Prop

From websites:

Grill Prop

Suitable for both novice and grilling professional, the adjustable cast aluminum Grill Prop keeps your grill open enough to uniformly seal flavors in without drying food out.

Prop a little or a lot, depending on the air flow you need — food comes out tender, juicy and delicious, without overcooking or undercooking.

Also good for allowing your grill to cool without exposing the inner parts to the elements.

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Metal spring handle (top): $10.95.

Wood handle: $10.46.