GB-1000 Hero Photo

The fully redesigned

The only performance-rated, non-corrosive 1,000-gallon grease interceptor on the market. Redesigned from the ground up, the GB-1000 features Schier Flow Technology™, industry-leading grease capacity, and the same great lifetime warranty.

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Looking for a 1,000-gallon gravity grease interceptor? You’re in the right place. The GB‑1000 is now dual certified for hydromechanical performance to ASME A112.14.3 and CSA B481.1 AND IAPMO/ANSI Z1001-2021 for gravity grease interceptors.

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Enhancements and benefits

Flow icon
No flow control required
Safety Star icon
Safety Star® Standard
Baffle icon
Central baffle provides extra resistance to environmental factors
Forklift icon
Lighter weight for enhanced mobility easy installation
Above Grade icon
Above-grade installation capability
GB-1000 outline icon
Rotationally-molded polyethylene tank

Product Summary

GB-1000 Product Dimension View

Technical Information

Flow Rates/Grease Capacities:

  • 5,495 pounds at 100 GPM
  • 4,959 pounds at 200 GPM

Flow Rates/Grease Capacities for Miami DERM*:

  • 5,272 pounds at 100 GPM
  • 3,127 pounds at 200 GPM

* Satisfies Miami DERM 99% efficiency requirements.

Solids Capacity: 211 gal. (799 L)

Liquid Capacity: 1,000 gal. (3,785 L)

Weight: 824 pounds (assembled with Outdoor Cast Iron Covers)

Installed: Indoor/Outdoor installation (requires 74" access)


Spec Selector (New)

Configurations for this product yield unique specification documents. Please make a few selections below so we can provide the exact documents that you need.


Pumpout Port




This product can expose you to chemicals such as Lead, Carbon Black, N-Hexane, Methyl Isobutyl Ketone, Nickel, Bisphenol A, Naphthalene, Talc, Vinyl Chloride, Formaldehyde (gas) and Titanium Dioxide, which are known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to

GB-1000 Front View
GB-1000 Side View
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The GGI-1000 has been replaced by the GB-1000 - now built to IAPMO/ANSI Z1001-2021 for gravity grease interceptors.

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