Why DDR BBQ Supply?
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35+ Years of Smoking Experience
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Trusted by 10,000+ BBQ Enthusiasts
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Handpicked for Quality & Performance
Custom Charcoal/Wood Firebox Grate 30" l x 21" w is built for BBQ cooks who need stronger fire support, better airflow, and more dependable combustion inside a smoker firebox. If your current firebox grate is warped, sagging, or choking off airflow under your charcoal and wood, this heavy-duty replacement grate helps keep your fire burning more consistently.
Precision-cut from durable 3/16" A36 steel and framed for strength, this grate supports wood splits and charcoal while allowing ash to fall away from the fuel source. It is a strong fit for offset smokers, stick burners, reverse flow smokers, firebox replacements, and custom BBQ pit builds.
Grates take 1-2 weeks to mail from the date of purchase as every grate is cut to order.
Why You'll Love It- 30" l x 21" w size for larger firebox replacement applications
- Made from durable 3/16" A36 steel
- Finished framed thickness is approximately 1/2"
- Helps improve airflow beneath charcoal and wood
- Allows ash to fall away from the fire for better combustion
- Excellent for offset smokers, stick burners, and custom BBQ pits
- Framed and welded for added rigidity
- Made in the USA
- Offset smoker fireboxes
- Stick burners
- Reverse flow smokers
- Custom smoker builds
- Charcoal and wood-burning BBQ pits
- DIY firebox fabrication projects
- Offset smoker owners replacing a warped or worn-out firebox grate
- DIY pit builders fabricating a custom smoker or firebox
- BBQ cooks who want better airflow and steadier fire management
- Anyone needing a stronger charcoal or wood support grate
This firebox grate is fabricated from 3/16" A36 steel to handle repeated high-heat BBQ use. The framed design adds strength and rigidity, helping the grate support charcoal, wood splits, and long fire management sessions inside demanding smoker fireboxes.
The open grate design allows ash to fall below the fuel source instead of smothering the fire. That means better airflow, cleaner combustion, and more stable cooking temperatures during long cooks.
Perfect for Firebox Upgrades and Custom Pit BuildsWhether you are restoring an offset smoker, replacing a sagging firebox grate, or building a custom BBQ pit, this 30" l x 21" w firebox grate gives you dependable support where it matters most. Its larger footprint provides excellent fuel support for extended cooks while maintaining proper airflow beneath the fire.
This grate works well in offset smokers, reverse flow pits, stick burners, and other wood or charcoal-burning cookers where fire control directly affects cooking performance.
Product Details- Dimensions: 30" l x 21" w
- Material: 3/16" A36 steel
- Finished Thickness: Approximately 1/2" when framed
- Application: Charcoal and wood-burning firebox use
- Construction: Framed and welded for strength
- Made in the USA
- Measure your firebox interior before ordering to confirm proper fitment.
- Leave enough clearance around the grate for airflow and easy ash removal.
- Remove ash regularly during long cooks to prevent airflow restriction.
- Apply a light coat of cooking oil before first use to help slow surface oxidation.
- Keep the grate dry when not in use to help reduce rust.
What is the thickness of the grate?
The grate is fabricated from 3/16" thick A36 steel and framed for added strength. The finished assembled thickness is approximately 1/2".
What steel do you use?
We use A36 food-grade steel for our custom grill grates and firebox grates.
Do you offer stainless steel grates?
No. We currently do not offer stainless steel grates.
Can this grate be used for both charcoal and wood?
Yes. This grate is designed to support both charcoal and wood-burning firebox applications.
Will this fit my smoker?
This grate measures 30" l x 21" w. Always measure your firebox interior before ordering to confirm fitment. Customers must provide the correct grate dimensions, as DDR BBQ Supply cannot determine the required grate size for third-party cookers.
Can I use this in a custom smoker build?
Yes. This grate works well for custom BBQ pit fabrication, smoker restoration projects, and firebox replacement applications.
Is this grate welded?
Yes. All grates are framed and welded for added rigidity and long-term durability.
How do I maintain the grate?
Remove ash regularly, keep the grate dry when not in use, and apply a light coat of cooking oil after use to help reduce surface rust.
How long does shipping take?
Please allow approximately 1-2 weeks from the order date since every grate is cut to order.
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Texas-Born. BBQ Bred.
With over 35 years of smoking experience, we started DDR BBQ Supply with a simple goal: to help others cook better barbecue. We've spent decades learning what works and what doesn't, and we apply that knowledge to every product we carry. From high-performance grills and smokers to carefully selected rubs, sauces, and tools, everything we offer is something we believe in and use ourselves. We don’t believe in cutting corners or selling gear we wouldn’t rely on during our own backyard cooks and when we compete in BBQ competitions.