For a basic round-front toilet, pick the Kohler Wellworth K-3997. For standard height and a 3-inch flush valve, the American Standard Cadet PRO. For a taller ADA round toilet with seat and wax ring, the Gerber Maxwell Crest.
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This guide compares three round-front toilets using Kohler, American Standard and Gerber spec sheets.
Round toilets compared (maker spec sheets)
On a phone, swipe or scroll the table sideways to see every column.
| Model | Depth | Height | Trapway | Seat |
|---|---|---|---|---|
| Kohler Wellworth K-3997 | 27-3/4 in. | Standard | 2-1/8 in. | Sold separately |
| American Standard Cadet PRO 215DA104 | 28-1/4 in. | Standard, 15 in. rim | 2-1/8 in. | Sold separately |
| Gerber Maxwell Crest GRS48320 | 27-1/4 in. | ErgoHeight (ADA) | 2 in. | Soft-close included |
A round-front toilet has a shorter bowl than an elongated one, so it projects less from the wall. That makes it a common pick for small bathrooms and powder rooms, and Kohler’s sheet for the Wellworth says exactly that. If you have space and want more room at the front of the bowl, see our dual flush and one-piece toilet guides, which cover elongated models. For very tight rooms, see our compact toilet guide.
Kohler Wellworth K-3997: round front, Class Five flush
Choose the Wellworth K-3997 for a basic round-front two-piece with a three-bolt quick-connect install. Kohler’s spec sheet (resources.kohler.com) lists a two-piece round-front design, a 1.28 gpf Class Five canister flush, a 2-1/8-inch fully glazed trapway, a left-hand polished chrome trip lever and a three-bolt quick-connect installation on a standard 12-inch rough-in.
The technical table lists a 10-1/2 by 7-3/4-inch water surface, and the drawing shows a 27-3/4-inch depth and a 14-1/2-inch bowl height. The seat and supply line are sold separately, and the sheet notes the toilet is eligible for rebates in some municipalities. On October 15, 2026, the standard new offer sold by Amazon.com was in stock with model 3997-0, white. More in our Kohler toilet guide.
Check Kohler Wellworth K-3997 round-front toilet on Amazon →
American Standard Cadet PRO 215DA104: standard height
Choose the Cadet PRO for a standard-height round-front toilet with a 3-inch flush valve. American Standard’s spec sheet (lixil.cdn.celum.cloud) lists vitreous china, a 1.28 gpf Cadet flushing system, a 3-inch flush valve, a fully glazed 2-1/8-inch trapway, a 9 by 8-inch water surface, a PowerWash rim, a metal trip lever and a 12-inch rough-in, with EZ-Install tools and color-matched bowl caps.
It lists a 28-1/4 by 17-3/8 by 28-7/8-inch size, a 15-inch rim height in the drawing, and a 1,000-gram MaP score at 1.28 gpf from testing by IAPMO R&T. The seat and supply line are sold separately. The 2013 sheet lists a 5-year warranty, while the current product page (americanstandard-us.com) lists a limited lifetime warranty on chinaware and 5 years on mechanical parts; check the warranty in the box. On October 15, 2026, the standard new offer sold by House & Hammer was in stock with model 215DA104.020. More in our American Standard toilet guide.
Check American Standard Cadet PRO 215DA104 round-front toilet on Amazon →
Gerber Maxwell Crest GRS48320: ADA height, seat and wax ring included
Choose the Maxwell Crest for a taller round-front toilet with everything but the supply line in the box. Gerber’s spec sheet (cdn.intelligencebank.com) lists a two-piece ErgoHeight ADA round-front toilet in vitreous china, 1.28 gpf, a 3-inch flush valve, a Fluidmaster 400A fill valve, a 100% glazed 2-inch trapway, an 8-11/16 by 6-5/16-inch water surface and a 1,000-gram MaP rating.
It lists a 31-inch height, a 17-1/8-inch width and a 27-1/4-inch depth, with the drawing showing 17-1/8 inches to the top of the seat. The box includes the bowl, tank, soft-close seat, ReadySet installation kit, wax ring and bolt caps; the supply line is not included. The sheet lists a 5-year limited warranty, while Gerber’s product page (maker page: www.gerber-us.com/x/products/us-GRS48320) lists a limited lifetime warranty on the vitreous china and 5 years on parts. On October 15, 2026, the standard new offer sold by Amazon.com showed limited stock with model GRS48320. More in our Gerber toilet guide.
Check Gerber Maxwell Crest GRS48320 round-front toilet on Amazon →
Round or elongated?
The difference is the bowl length. Round-front bowls are shorter, so the toilet takes less floor space in front; the three here are 27-1/4 to 28-1/4 inches deep from the wall. Gerber’s product page describes its round seat as shorter in length for space efficiency in smaller bathrooms. If a door swing or vanity leaves little clearance in front of the toilet, measure from the wall to the obstruction before you choose.
Standard or chair height?
The Kohler and American Standard are standard height: American Standard lists a 15-inch rim, and Kohler’s drawing shows 14-1/2 inches, before a seat is added. The Gerber is an ErgoHeight ADA model, with its drawing showing 17-1/8 inches at the seat. Gerber says the ErgoHeight design makes it easier to sit and stand; for more taller options, see our chair-height toilet guide.
Seats, supply lines and install parts
Round toilets need a round seat. The Gerber includes a soft-close seat; for the Kohler and American Standard, buy one separately; see our toilet seat guide. None of the three includes a supply line; see our supply line guide. The Gerber includes a wax ring; for the others, see our wax ring guide. All three are 12-inch rough-in, so measure from the finished wall to the floor bolts first.
Installation details from the makers
Each maker lists something specific about setting the toilet. Kohler lists a three-bolt quick-connect installation for the Wellworth and, for back-to-back toilets on a shared wall, says to use only a 45-degree double wye fitting, not a double sanitary tee. American Standard includes EZ-Install tools with color-matched bowl caps on the Cadet PRO and shows a suggested supply location 8 inches above the floor.
Gerber’s product page says its ReadySet kit has guides that align the bowl as it is lowered and star bolts that can be hand-tightened. Gerber also lists a Fluidmaster 400A fill valve and a corrosion-resistant flapper. If either part ever needs replacing, see our fill valve guide.
Check these before you order
- Rough-in. All three need 12 inches.
- Depth. 27-1/4 to 28-1/4 inches.
- Height. Standard on Kohler and American Standard; ADA on Gerber.
- Seat. Included only on the Gerber.
- Warranty. Sheet and product page differ for two models.
- Seller. American Standard via House & Hammer.
Which round toilet should you buy?
For a basic round-front two-piece with a three-bolt install, the Kohler Wellworth K-3997. For standard height with a 3-inch flush valve and a 1,000-gram MaP score, the American Standard Cadet PRO. For a taller ADA round toilet with the seat and wax ring in the box, the Gerber Maxwell Crest. For all styles, see our toilet guide.
Frequently asked questions
What is a round toilet?
A toilet with a round-front bowl, which is shorter than an elongated bowl and takes less room in front.
Which round toilet here is shortest from the wall?
The Gerber Maxwell Crest, at 27-1/4 inches deep.
Which round toilet is chair height?
The Gerber Maxwell Crest, an ErgoHeight ADA model.
Do these come with a seat?
Only the Gerber; the Kohler and American Standard seats are sold separately.
What rough-in do they need?
All three are listed for a 12-inch rough-in.
How we chose
This document-based guide makes no hands-on testing claim. We read Kohler’s sheet for the Wellworth K-3997, American Standard’s sheet and product page for the Cadet PRO 215DA104, and Gerber’s sheet and product page for the Maxwell Crest GRS48320. On October 15, 2026, we checked each linked standard new Amazon offer for model, seller, stock and an add-to-cart button. Read our selection method and about Plumbing Picks.
Primary sources
- Kohler K-3997 spec sheet (resources.kohler.com): Wellworth.
- American Standard 215DA.104 spec sheet (lixil.cdn.celum.cloud): Cadet PRO.
- American Standard 215DA104 product page (americanstandard-us.com): warranty.
- Gerber GRS48320 spec sheet (cdn.intelligencebank.com): Maxwell Crest.
- Gerber GRS48320 product page (maker page: www.gerber-us.com/x/products/us-GRS48320): warranty and contents.