A rear-discharge toilet sends waste through a wall connection rather than a floor drain, so the right choice depends on your plumbing measurements as much as comfort and flush features. These five models offer options such as taller bowls, dual-flush systems, and skirted designs. Before choosing one, check the drain location and rough-in details against your bathroom; a mismatch can make installation difficult or prevent a proper fit.
Table of Contents
Quick Comparison
| Toilet | Stated height | Flush system | Notable detail |
|---|---|---|---|
| SUPERFLO 19-Inch Tall Rear Outlet Toilet | 19 inches | Dual flush: 1.28/0.8 GPF | Soft-close seat; smooth base |
| MaceratingFlo Rear Discharge Toilet | 18 inches | 1.28 GPF | Elongated bowl; 7-inch rough-in and extension pipes included |
| Simple Project 19-Inch Rear Outlet Toilet | 19 inches | Dual flush; listing gives conflicting specifications | Drain center specified at 7.5 inches above floor |
| SUPERFLO Round Rear Discharge Toilet | 17.8 inches in description | Dual flush: 1.6/0.8 GPF | Round bowl; smooth base |
| Little Meerkat 19-Inch Tall Toilet | 19 inches | Dual flush: 1.28/0.8 GPF | Package includes bowl and tank, not a macerator pump |
Our Picks: Best Rear Discharge Toilet With Tank reviews
1. SUPERFLO 19-Inch Tall Rear Outlet Toilet: Best for a Higher Seat
This SUPERFLO model is designed for wall-drain bathrooms and has a stated bowl height of 19 inches. Its taller profile may make sitting down and standing up easier for some people, including seniors and people with limited mobility. It uses a P-trap design and is described as suitable for rear- or wall-drain installations.
The dual-flush system offers a 1.28-GPF full flush and a 0.8-GPF half flush. A soft-close seat helps avoid a sudden slam, and the top-mounted seat design is intended to make removal and maintenance easier. The continuous-looking base also has fewer curves where dirt may collect than a more detailed exterior.
Compared with the other picks, this model stands out for combining a 19-inch height with two flush options and a smooth base. The supplied information does not give a drain-center measurement or rough-in dimension, so confirm the fit with the seller or product specifications before ordering. The description also mentions pairing it with a macerator pump for broader applications; that should not be taken to mean a pump is included.
Pros:
- 19-inch stated bowl height may suit shoppers seeking a taller seat.
- Dual flush offers 1.28- and 0.8-GPF options.
- Soft-close seat and top-mounted design support easier seat handling.
- Smooth base is intended to simplify cleaning.
Cons:
- Drain-center and rough-in measurements are not specified in the supplied details.
- A macerator pump may be needed for some installations and is not listed as included.
Verdict: Consider this SUPERFLO if you want a tall, dual-flush rear-outlet toilet, but verify your wall-drain measurements before buying.
2. MaceratingFlo Rear Discharge Toilet: Best for a Defined Rough-In
This two-piece rear-discharge toilet is intended for bathrooms with wall-mounted plumbing, including renovation layouts without a floor drain. Its listed 7-inch rough-in gives you a specific measurement to compare with your existing setup, and two extension pipes are included to accommodate different installation needs.
The toilet has an 18-inch stated height, an elongated bowl listed at 18.5 inches, and a 1.28-GPF flush. Its rimless flush design is described as providing consistent bowl cleaning. The skirted ceramic exterior has a smooth profile, which may make routine wiping easier than cleaning around exposed contours.
This pick provides more installation detail than several alternatives, but the 7-inch rough-in does not replace measuring your existing drain. The product description also refers to a P-trap and a two-piece toilet; check the full installation instructions and included parts for your specific plumbing before starting work. The listing states a two-year limited warranty.
Pros:
- Specific 7-inch rough-in measurement helps with fit comparisons.
- Two extension pipes are included.
- Elongated bowl and 18-inch stated height offer a comfort-focused design.
- Skirted exterior and rimless flush design prioritize easier cleaning.
Cons:
- Its 18-inch height is lower than the 19-inch models in this group.
- You still need to confirm that the rough-in and drain connection match your bathroom.
Verdict: Choose this model if its 7-inch rough-in matches your plumbing and you prefer an elongated bowl with included extension pipes.
3. Simple Project 19-Inch Rear Outlet Toilet: Best When the Drain Center Matches
Simple Project’s rear-outlet toilet is listed at 19 inches tall and uses a P-trap design. Its key fit detail is the stated 7.5-inch distance from the floor to the center of the rear drain. That makes measurement especially important: the product description warns that a mismatch can lead to unstable installation or poor drainage.
The description lists a soft-close seat and a dual-flush system, but the flush specifications conflict. The product title gives 1.0/1.6 GPF, while the description says 1.0/1.28 GPF. Confirm the current product specifications before relying on a water-use figure or ordering replacement parts. The description says the P-trap helps create a water seal to limit sewer odors.
This could be a useful option if you need a tall toilet and your drain center matches the stated measurement. It is not the safest pick for a bathroom where the rear outlet’s location is unknown or hard to measure. Do not assume that a 19-inch height alone means the toilet meets accessibility standards; check the full dimensions and applicable requirements for your project.
Pros:
- 19-inch stated height may suit shoppers looking for a taller bowl.
- Gives a specific 7.5-inch drain-center measurement to check.
- P-trap design and soft-close seat are described in the product details.
- Dual-flush operation is listed.
Cons:
- The listed flush rates conflict between the title and description.
- Drain alignment must be checked carefully before installation.
Verdict: This is worth considering only after confirming the 7.5-inch drain-center fit and resolving the flush-specification discrepancy.
4. SUPERFLO Round Rear Discharge Toilet: Best for a Round Bowl
This SUPERFLO model pairs a rear-drain P-trap design with a round bowl. The product description gives its height as 17.8 inches, though the title calls it a 19-inch toilet. Because those figures do not match, verify the actual bowl and seat height with the seller before choosing it for a specific comfort or access need.
The dual-flush system is specified at 1.6 GPF for a full flush and 0.8 GPF for a half flush. A soft-close seat is top-mounted for removal and maintenance, and the smooth base is designed to reduce hard-to-clean areas. The description notes that a macerator pump may be used for a wider range of applications, but does not say one comes with the toilet.
A round bowl may suit a bathroom where you prefer that bowl shape, while the other options include an elongated design or do not specify their bowl shape in the supplied details. The main drawback is the height discrepancy. Also check the rear outlet’s diameter and height against your plumbing, as the product description specifically advises verifying the drain connection before purchase.
Pros:
- Round bowl offers an alternative to an elongated design.
- Dual flush provides 1.6- and 0.8-GPF options.
- Soft-close, top-mounted seat is designed for easier removal.
- Smooth base is intended to make cleaning simpler.
Cons:
- The title and description give different height figures.
- Drain dimensions should be checked; a macerator pump is not listed as included.
Verdict: Pick this SUPERFLO only if you want a round bowl and have confirmed both its actual height and rear-drain fit.
5. Little Meerkat 19-Inch Tall Toilet: Best for a Simple Package Description
Little Meerkat lists this as a 19-inch tall rear-outlet toilet and says the package includes the bowl and tank. Its dual-flush system is specified at 1.28 GPF and 0.8 GPF, and the soft-close cover is intended to shut quietly. The taller design may appeal to people who find it easier to sit down and stand up from a higher seat.
The product description says this toilet does not need a macerator pump in its intended setup, and mentions connecting it with an extension tube depending on the bathroom. The package does not include a macerator pump. Since the supplied information does not give a drain-center or rough-in measurement, ask for those details and compare them with your plumbing before ordering.
This option gives a clear account of what comes in the package and its flush rates, but you should not treat the extension-tube note as proof that it will fit every rear-drain layout. Confirm what connection parts are included and whether additional components are needed for your installation.
Pros:
- 19-inch stated height and soft-close seat support a comfort-focused design.
- Dual flush is specified at 1.28 and 0.8 GPF.
- Package description clearly says it includes the bowl and tank.
- Product information describes an extension-tube installation option.
Cons:
- A macerator pump is not included.
- Drain-center and rough-in measurements are not provided in the supplied details.
Verdict: Consider the Little Meerkat if you want a 19-inch toilet with a clearly stated dual-flush system, but confirm the required connection parts and measurements first.
How to Choose a Rear Discharge Toilet With Tank
Measure the Rear Drain Location
Measure from the finished floor to the center of the drain opening in the wall, then compare that number with the toilet’s specified drain-center height. Also check the drain outlet’s diameter and position. The Simple Project listing specifies a 7.5-inch center height, while the MaceratingFlo listing gives a 7-inch rough-in. These measurements describe different fit details, so do not assume they are interchangeable.
Confirm the Plumbing Type and Installation Parts
Rear-outlet toilets are made for a wall connection, but the right connection still depends on your bathroom’s plumbing. Check the product instructions for the P-trap arrangement, required fittings, extension pipes, and any limits on the installation. Some product descriptions mention a macerator pump as an option for broader use, while Little Meerkat says its toilet does not need one in its intended setup. A pump is not listed as included with the Little Meerkat model.
Compare Bowl and Seat Height
A taller bowl can make sitting down and standing up easier for some people, but stated toilet height may not tell the whole story. Check whether the listed measurement is for the bowl, toilet, or seat, and confirm the installed seat height if that matters to you. The SUPERFLO round model’s title and description give different height figures, so verify its dimensions. A tall toilet is not automatically certified as ADA-compliant.
Choose a Bowl Shape and Exterior
The MaceratingFlo model is described as elongated, while one SUPERFLO option has a round bowl. Consider the space available and the shape you find comfortable. A skirted or smooth base can have fewer exposed contours to clean, but the exterior style does not replace checking the toilet’s full dimensions and clearances.
Understand Flush Rates
Compare the full- and half-flush rates, shown in gallons per flush (GPF), and make sure the specifications agree across the product information. The Simple Project listing conflicts on its flush rates, so confirm them before purchase. Dual flush gives you two flush-volume options, while the MaceratingFlo listing specifies a single 1.28-GPF rate.
Check What Comes in the Box
Do not assume that every fitting or accessory is included. The MaceratingFlo description says two extension pipes are included, and the Little Meerkat description says the package contains the bowl and tank but not a macerator pump. Check the full package details for the seat, connection parts, and any other items you need before scheduling installation.
Review Warranty and Support Details
Warranty terms and installation help can matter if you are replacing a toilet in an older bathroom. The MaceratingFlo description states a two-year limited warranty, while the other supplied product details do not provide the same warranty term. Read the listing’s current warranty and support information before buying, and consider professional installation if you are unsure about the drain connection.
FAQs
What is a rear discharge toilet?
A rear discharge toilet sends waste through an outlet at the back of the toilet into plumbing in the wall, rather than through an outlet in the floor. It must match the bathroom’s wall-drain location and connection.
Can I replace a floor-outlet toilet with a rear-outlet model?
Not as a simple like-for-like swap in every bathroom. A rear-outlet toilet needs compatible wall plumbing, and the drain position and connection must match the selected toilet. Check the installation details or consult a plumber before making the change.
Does a rear discharge toilet always need a macerator pump?
No. The supplied descriptions differ: some mention a macerator pump as an option for broader applications, while Little Meerkat says its toilet does not need one in its intended setup. Confirm the requirements for the exact model and your plumbing layout.
How do I measure for a rear-outlet toilet?
Measure from the finished floor to the center of the wall drain, and check the drain’s position and diameter. Compare those measurements with the model’s rough-in and outlet specifications. If the product information does not give enough detail, request it before buying.
Is a 19-inch toilet ADA-compliant?
Not necessarily. A stated height by itself does not establish compliance. Requirements can depend on the full installed dimensions and other features, so check the applicable standards and product documentation for your project.
Which rear discharge toilet has the most clearly stated installation measurements?
Among these options, MaceratingFlo gives a 7-inch rough-in and says that two extension pipes are included. Simple Project specifies a 7.5-inch distance from the floor to the drain center. Those figures refer to different fit details, so measure your bathroom and compare the manufacturer’s installation instructions carefully.
Are the flush specifications consistent across all five models?
No. Simple Project’s title and description list different full-flush rates. SUPERFLO’s round model also has a height discrepancy between its title and description. Confirm any conflicting details with the seller before you order.
Final Recommendation
For a rear-discharge toilet with a tall profile and a clearly stated dual-flush range, the Little Meerkat is a reasonable option to investigate, provided its drain connection matches your bathroom and you do not need a pump included. If installation measurements are your main concern, compare the MaceratingFlo’s 7-inch rough-in with your plumbing and confirm the fit before ordering. In every case, prioritize drain alignment and the full installation requirements over height or appearance alone.
