MixRBBQ Ceramic Half-Moon Heat Deflector Plates 15" 2-Pack for Kamado Joe & 18" Grills — Cordierite, Indirect Cooking

MixRBBQ 15" ceramic half‑moon heat deflector plates are replacement heat shields designed to turn your Kamado Joe or 18" kamado into a reliable indirect-heat oven for low-and-slow smoking, baking, and roasting.

These cordierite ceramic plates fit Kamado Joe Classic I/II/III, Konnected Joe, and many 18" charcoal kamado grills including Big Green Egg. Sold as a two-piece half‑moon set, they let you configure full indirect heat or a direct/indirect combination, improving heat retention and reducing flare-ups while creating more consistent results for pizzas, ribs, breads, and whole poultry.

How do these plates change my grill's cooking performance?

The ceramic plates diffuse radiant heat and act as a thermal mass, producing gentler, more even temperatures across the cooking surface. That reduces hot spots, prevents burned bottoms, and helps maintain steady low-and-slow conditions without constant fuel adjustments.

• Two half‑moon stones form a full deflector for complete indirect cooking.
• High heat retention supports longer cook times using less charcoal.
• Improves convection-style circulation for more uniform doneness.

Will these fit my Kamado Joe Classic or Big Green Egg?

The plates are 15 inches and engineered to pair with Kamado Joe Classic I, II, III models and many 18" kamado-style grills like Big Green Egg. Before ordering, compare your grill’s original part size or model number to confirm compatibility.

• Compatible models include Kamado Joe KJ15042621, KJ15048625, and other listed KJ numbers.
• Designed for 18" kamado-style grills and Kamado Joe Divide & Conquer configurations.
• Measure your grill’s existing deflector or interior diameter if unsure.

How should I use and care for ceramic deflector plates?

Use both half‑moons together for full indirect cooking or one plate for a mixed direct/indirect setup. Allow plates to cool completely inside the grill before handling; avoid thermal shock to prevent cracking, and hand‑wash gently with warm water after cooling.

• Never pour cold water onto hot ceramic—let it cool first.
• Clean with a soft brush and mild water; no harsh chemicals.
• Inspect for damage on arrival—packaging is padded but ceramics can break in transit.

Why choose the MixRBBQ two‑piece design instead of a single stone?

Two half‑moon plates give flexible cooking zones and easier handling than a single large stone. They slide into popular kamado racks and work with existing multi-level cooking systems, so you can switch between full indirect, partial indirect, or combined direct/indirect setups quickly.

• Offers adaptable cooking configurations for pizza, smoking, and roasting.
• Easier to store and less fragile to move than one large stone.
• Pairs with Divide & Conquer-style racks for multi-level cooking.

Who is this for: Grillers who want a straightforward upgrade for their 18" kamado—home smokers, pizza bakers, and anyone seeking more consistent indirect heat. If you own a Kamado Joe Classic series or a similarly sized 18" kamado and you want better heat control, simpler low-and-slow cooks, and less flare-up risk, these MixRBBQ ceramic half‑moon heat deflectors are a practical, low-maintenance accessory. Remember to verify your grill’s model or measure the original part before purchase and treat the plates gently to avoid thermal shock.