Choosing a grease interceptor for a commercial sink usually comes down to space and separation power. You want a unit that pulls oil and grease out of wastewater without forcing you to redesign the plumbing under the sink. When two options look this similar, the real question is whether the box includes everything you need for installation and whether the unit will fit the space you have.
Quick verdict: These two options are not really competing on specs-they are the same interceptor with the same filtration setup. If your under-sink area can fit a compact unit, either one will do the job. The only reason to lean one way is the included accessories listed in the description.
| Attribute | Commercial Grease Interceptor | Stainless Under Sink Grease Trap US |
|---|---|---|
| Price | USD 49.03 | USD 49.03 |
| Capacity | 18-20L | 18-20L |
| Material | Stainless Steel | Stainless Steel |
| Overall Dimensions | 35 x 25 x 23 cm | 35 x 25 x 23 cm |
| Wastewater Inlet Diameter | 4.8 cm | 4.8 cm |
| Water Outlet Diameter | 4.8 cm | 4.8 cm |
| Grease Outlet Diameter | 2.2 cm | 2.2 cm |
| Filtration Stages | Four | Four |
Where both options win: The shared filtration system is what does the heavy lifting. It separates mineral oil, animal oil, vegetable oil, mixed oil, and emulsified oil from water, so the same unit can handle a range of kitchen waste streams. The compact shape slides into an under-sink cabinet without taking over the whole space.
Where the Commercial Grease Interceptor is the simpler pick: This option gives you the core grease trap package without extra details to sort through. If you are comfortable setting up your own drain connections and already know what accessories you need, the straightforward description makes it the no-fuss choice.
Where the Stainless Under Sink Grease Trap US is more helpful: This version adds a package breakdown to the description: one grease trap interceptor, one drainage pipe, one lid, and all accessories required for installation. That itemized list is useful if you are planning the install yourself and want to confirm the parts are included before you start.
Commercial Grease Interceptor
This is the uncomplicated way to get a compact stainless grease interceptor. It is designed to separate mineral, animal, vegetable, mixed, and emulsified oils from water, which makes it a flexible fit for kitchens that handle different types of cooking oil. The stainless construction is meant to hold up over time, and the 18-20L capacity suits modest waste volumes rather than a high-output fry station. The limitation is simple: this unit is on the smaller side, so it works best for sinks with lower grease loads. If your daily volume is light to moderate, this is a dependable, straightforward buy.
Stainless Under Sink Grease Trap US
This version of the grease trap is the better pick when you want to see the full contents before committing. The package includes the interceptor, a drainage pipe, a lid, and all installation accessories, which takes some guesswork out of a DIY setup. Performance matches the other option exactly: the same inlet and outlet connections, and the same four-stage filtration. The limitation is practical: before you buy, measure the under-sink space to make sure it can accept the 35 x 25 x 23 cm body. If that space is available, the itemized package helps you get started faster.
Final choice by use case: If you want a no-extras stainless interceptor for a compact under-sink space, go with the Commercial Grease Interceptor-it covers the essential job at $49.03. If you prefer a description that spells out the drain pipe, lid, and installation accessories, choose the Stainless Under Sink Grease Trap US. Functionally, both deliver the same oil-water separation, so no matter which one you pick, you are getting the same dependable unit under the sink.
