Atlantic Metalworks GI-20 - 20 lb 10 gpm Grease Trap Interceptor

Atlantic Metalworks GI-20 20 lb 10 gpm Grease Trap Interceptor

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SKU: GI-20


The GI-20 grease trap from Atlantic Metalworks is a carbon steel grease interceptor certified by the Plumbing and Drainage Institute and capable of handling a drain flow of 10 gallons per minute. With a holding capacity of 20 lbs, the GI-20 is a good fit for many two compartment sinks; but, since multiple factors affect sizing, your local health & plumbing requirements will be the final rule. Hydromechanical grease interceptors like the GI-20 depend on a simple yet effective baffle system that enlists agitation and Bernoulli's principle to separate fats and oils out of the water and lift them to holding area. This keeps excess grease in your waste water from washing into your drainage pipes where it can clog your system and cause expensive plumbing issues. Speaking of guarding against expense, Atlantic Metalworks grease traps fit the two rules of thrift: 1) Don't pay too much 2) Buy something solid. Constructed of heavy carbon steel, these traps are anything but flimsy and their corrosion-resistant enamel coating helps guard against rust. As to price, a smart shopper like you already knows the GI-20 is one of the most affordable grease interceptors you can buy.

In a hurry? Check out these key benefits:

  • Capacity: 20 lbs.
  • Carbon steel construction
  • Gallons Per Minute: 10.
  • Inlet/Outlet Nominal Pipe Size: 2".
  • Includes an Air Intake and Flow Control.

Check out these comparable grease traps from BK Resources and Ashland PolyTrap:

BK Resources BK-GT-20 Grease Trap - 20 lbs - 10 gpm

BK Resources 20lb Grease Trap

Carbon steel construction.

Check it out Alternative Models

Ashland PolyTrap grease interceptors

Ashland PolyTrap 20lb Grease Trap

Manufactured with specially chosen compound materials to prevent rust and corrosion.

Check it out Alternative Models


Standard Features

  • Both ends accept no-hub adapters for steel or plastic, t-vent pipe included.
  • Features no-skid cover w/ locking device.
  • Includes removable baffle.
  • PDI Certified.
  • Equipment guaranteed against defects in material and/or workmanship for a period of one year from the date of purchase.
  • For more information on grease trap history and function, check out this Blog Post: Grease Trap 101: History.
  • To download a cleaning log for your regular grease trap maintenance, click here: Grease Trap Cleaning Log.


Model GI-8 GI-14 GI-20 GI-30 GI-40 GI-50 GI-70 GI-100
Capacity (lbs) 8 14 20 30 40 50 70 100
Gallons Per Minute 4 7 10 15 20 25 35 50
Nominal Pipe Size (in) 2 2 2 2 3 3 3 4
Width (in) 16 18 22 22 1/4 24 1/4 27 3/8 30 1/4 32 1/4
Depth (in) 10 1/4 13 3/8 14 3/8 15 3/4 15 3/4 18 3/8 17 7/8 22
Height (in) 11 1/4 12 1/8 12 1/8 13 7/8 15 16 1/2 19 3/8 21 1/2
Weight (lbs) 40 54 59 69 78 98 128 175


Atlantic Metalworks stainless steel (formerly Prima Supply stainless steel) belongs to a line of family owned and operated businesses which has led the foodservice industry since 1947. They supply commercial grade economy stainless steel products, including tables, wall shelves, microwave shelves, pre-rinse faucets, grease traps, and sinks, all in various sizes to fit your restaurant's needs. Customer satisfaction is their goal, and they achieve this by offering low prices on all of their commercial grade economy stainless steel products.


Atlantic Metalworks GI-20 - 20 lb 10 gpm Grease Trap Interceptor is rated 4.857142857142857 out of 5 by 7.
Rated 5 out of 5 by from Amazing Customer Service I had ordered from another company and two weeks later they still didn't know when they would get it, let alone when I would receive it! I call Prima Supply and they were just amazing, they had the item I needed and they overnighted it to me and it actually arrived the very next day! Thank you!!
Date published: 2015-10-28
Rated 4 out of 5 by from good grease trap! fast shipping! My first grease trap, works well for my small kitchen. Solid construction, good price with free shipping. Only thing was the vent pipe didn't quite fit the pvc pipe, so I had to file it down some, only took about 15 minutes.
Date published: 2015-05-25
Rated 5 out of 5 by from great I got this item couple moths ago it a good steel material, look good and fit perfect for my grease trap hole and it functioning well so far. it is a 5 stars range.
Date published: 2013-12-29
Rated 5 out of 5 by from Impressed! First Time User I was concerned ... because I have never bought from this group ... purchase was simple ... delivery beat expectations! Nicely done!
Date published: 2015-07-11
Rated 5 out of 5 by from Great service Perfect drop in for the old one, good fit, simple replacement...
Date published: 2014-05-26
Rated 5 out of 5 by from Owner Very nice product , best price , good quality and good shipping
Date published: 2016-05-17
Rated 5 out of 5 by from Great Value Shopped around and best price and shipping was free!!!
Date published: 2014-02-26
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can this product be install level ground?

Asked by: Juan Ramirez
The question is not clear, But to installation no need to do level ground and is easy to installation you need only two pipe coupling from Home Depot 
Answered by: Atheer
Date published: 2016-05-30

can these grease traps be lnstalled outside?

Asked by: slade
Yes, though you will diminish the lifetime of the unit by exposing the exterior of the unit to the elements. This unit is made of quality carbon steel, but even the highest grade stainless steel is susceptible to corrosion after prolonged exposure to moisture or certain chemicals. Coating these units with a silicone coating or regular cleaning can forestall corrosion, but it cannot be altogether avoided- especially if the unit is placed outside. Also, be sure to check your state and local ordinances to ensure that outside installation is permitted.
Answered by: PrimaJosh
Date published: 2015-08-07

do you need to install a sample well this type of grease trap

Asked by: slade
A sample well is not at all required for this unit to function, but it may be required by law, depending on the ordinances in your locality. Fort Worth, TX and Arlington, VA, for example, do appear to require sample wells for grease traps, while more rural districts may not. I would advise you to call your health inspector or consult the building codes in your region to determine whether or not you need a sample well.
Answered by: PrimaJosh
Date published: 2015-08-07

What is the height to center of inlet from floor?

Asked by: Pizza Nick
The distance from the center of the inlet is 8 1/8".
Answered by: Evan
Date published: 2015-07-01

how do you clean out these grease traps ? and how messy is it.?

Asked by: frypan
Great question! Check out our instructional video and directions for more information on cleaning grease traps. ( )
Answered by: Evan
Date published: 2015-05-01

Do the grease traps sit on the floor ? Or do they have to be built in ?

Asked by: frying pan
You can use them either way, but the grease traps will corrode faster if they are put under ground.
Answered by: Evan
Date published: 2015-04-28

will the 20lb grease trap be sufficient for a 10 x 10 x 14 3 compartment sink?

Asked by: shack
Requirements for grease traps vary depending on your location. Please contact your local health inspector for further information about which trap you need.
Answered by: JoshR
Date published: 2014-06-02

Is there a smaller size for a day care on the Ashland Poly trap?

Asked by: Johnp
The smallest Ashland PolyTrap is 8 lb, 4 gpm. You can see them all here:
Answered by: DanPrima
Date published: 2014-05-08
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