A roll-in shower base can make a bathroom easier to enter, but the right choice depends on more than whether it has a low or zero threshold. Measure the available space, check the drain location, and confirm how the base will meet the finished floor. These four options include a tub-replacement design, low-profile bases, and a curbless model with a reversible drain. The Ella stands out for its collapsible water dam, while the ANZZI offers a reversible drain layout.
Table of Contents
Quick Comparison
| Product | Size | Drain | Standout feature |
|---|---|---|---|
| Ella Wheelchair Roll-In Shower Base | 30 × 60 in. | Right; drain not included | Collapsible water retainer |
| WOODBRIDGE Zero-Threshold Shower Base | 47¾ × 36 in. | Center; drain not included | Low-profile design and integrated tiling flange |
| ANZZI Barrier-Free Curbless Shower Base | 59 × 35 in. | Reversible left or right | Textured black finish and included drain cover |
| WOODBRIDGE 59-Inch Zero-Threshold Shower Base | 59 × 31½ in. | Center; drain not included | Low profile and structural support ribs |
Our Picks: Best Roll In Shower Base reviews
Best for Tub Replacements: Ella Wheelchair Roll-In Shower Base
The Ella is a 30-by-60-inch acrylic base designed to fit the footprint of a standard bathtub. Its zero-step entry is intended to create a smooth approach into the shower, and the textured floor adds traction underfoot. This combination makes it a practical option to consider when replacing a tub with a roll-in shower.
Its distinctive feature is a flexible water retainer, described as a collapsible dam. It can help keep water within the shower area while compressing flat underfoot or beneath a shower chair or wheelchair. That design addresses a common trade-off with barrier-free showers: limiting water spread without adding a fixed threshold.
The base has a right-side drain, so measure your existing plumbing before choosing it. The drain itself is not included. Compared with the WOODBRIDGE options, the Ella’s main advantage is its collapsible retainer; the WOODBRIDGE bases instead emphasize low-profile installation and an integrated tiling flange.
Pros:
- 30-by-60-inch size is intended for a standard tub replacement.
- Zero-step entry supports roll-in access.
- Textured surface is designed to improve traction.
- Collapsible dam helps manage water without a permanent barrier.
Cons:
- Right drain may not match your plumbing layout.
- Drain is not included.
Verdict: Choose the Ella if you want a tub-sized roll-in base with a collapsible water retainer and your plumbing can accommodate a right-side drain.
Best Compact Low-Profile Option: WOODBRIDGE 47¾-Inch Zero-Threshold Base
This WOODBRIDGE base measures 47¾ by 36 inches and has a center drain. Its low-profile design is intended for accessible shower layouts, and the product description gives two installation approaches: flush with the floor for wheelchair access or set about an inch above the existing floor. The installed transition depends on the chosen setup and surrounding floor.
The base is made from sheet-molded compound with reinforced polymer resin layers. Support ribs underneath are intended to create a firm foundation when installed with thin-set mortar. An integrated tiling flange is designed to help protect the wall-side joints from leaks, while the textured floor adds grip.
At a little under 48 inches long, it is shorter than the 59-inch WOODBRIDGE model and the ANZZI base. That may help when the available shower area is limited, but it is not a direct match for every tub alcove. Check the measurements and installation plan before ordering. The product is marked unavailable in the supplied listing information, so confirm its current status before making plans around it.
Pros:
- Two installation approaches allow for different floor layouts.
- Center drain suits plumbing configured for that location.
- Integrated tiling flange is designed to help protect wall joints.
- Textured floor and reinforced support structure are built into the design.
Cons:
- Drain is not included.
- Availability may be limited, and the shorter length may not suit every opening.
Verdict: Consider this model if its 47¾-by-36-inch footprint fits your plan and you want a center-drain base with a low-profile installation option; verify availability and installation details first.
Best for Flexible Drain Placement: ANZZI Barrier-Free Curbless Base
The ANZZI measures 59 by 35 inches and is made from sheet-molding compound. Its barrier-free design is intended for roll-in shower installations, and the slate-inspired textured surface is designed to provide traction. The black finish gives it a more distinct look than the white bases in this selection.
Its reversible drain layout is the main practical advantage: it can be arranged for either a left- or right-side drain, depending on the installation. A coordinating drain cover is included, unlike the drain fittings for the other options here, which are listed as not included or not specified. Confirm exactly what plumbing parts are supplied before installation.
The listing describes the base as ADA compliant, but accessibility depends on the complete bathroom layout and installation, not just the shower base. Check applicable requirements with your contractor or local building authority. Compared with the Ella, the ANZZI does not list a collapsible water retainer; compared with the WOODBRIDGE bases, its reversible drain may offer more flexibility for an existing drain location.
Pros:
- Reversible drain layout accommodates left- or right-side placement.
- Includes a matching drain cover.
- Textured surface and barrier-free entry suit roll-in shower plans.
- Black finish offers an alternative to a standard light-colored base.
Cons:
- Black may be harder to coordinate with some bathroom finishes.
- The listing’s ADA description does not establish that the full bathroom will meet accessibility requirements.
Verdict: Pick the ANZZI if you need a 59-by-35-inch curbless base with a reversible drain and prefer a black, textured finish.
Best for a Longer Center-Drain Layout: WOODBRIDGE 59-Inch Zero-Threshold Base
This 59-by-31½-inch WOODBRIDGE base offers a longer footprint than the brand’s 47¾-inch model, while remaining narrower than the ANZZI. It has a center drain and a low-profile design intended for accessible entry. The listing describes a flush installation for wheelchair access or an installation about an inch above the existing floor.
The base uses sheet-molded compound with reinforced polymer resin layers, plus support ribs underneath. The product description recommends thin-set mortar for a firm installation. It also has an integrated tiling flange and a textured floor. The surface is described as repairable by sanding and polishing minor chips or scratches.
The center drain is a key limitation: it will work best when the plumbing location matches or can be adapted to the base. The 2-inch PVC shower drain is not included. The supplied listing information marks this model unavailable, so check its status before selecting it. Compared with the 47¾-inch WOODBRIDGE, this version gives you more length but takes up more space.
Pros:
- Long 59-inch footprint suits a larger shower area.
- Low-profile installation is designed to support easy entry.
- Integrated tiling flange and support ribs are part of the base design.
- Textured surface and described repair options add practical detail.
Cons:
- Center drain may require plumbing changes if your drain is elsewhere.
- Drain is not included, and availability may be limited.
Verdict: This is a sensible option to compare if you need a longer, narrow center-drain base, but confirm availability and make sure the drain location fits your project.
How to Choose a Roll-In Shower Base
Measure the opening and finished shower area
Start by measuring the length and width of the space where the base will sit, then compare those measurements with the product dimensions. Also account for wall finishes and the transition to the surrounding floor. A base that fits the rough opening may still need a carefully planned installation to create an accessible approach.
Match the drain to your plumbing
Drain placement can make or break a remodel. The Ella has a right drain, the two WOODBRIDGE models have center drains, and the ANZZI has a reversible left-or-right layout. Check the location of your existing drain and ask a plumber whether it can be moved. Also note that the Ella and WOODBRIDGE descriptions say the drain is not included.
Understand the threshold and floor transition
“Zero threshold” and “low profile” do not always describe the same installed result. The WOODBRIDGE listings give an option to install flush or with a low profile above the existing floor. Ask how the base will meet your finished bathroom floor and whether the planned transition will support the access you need.
Consider water containment
A barrier-free entry can let water move beyond the shower area if the surrounding design does not manage it. The Ella specifically includes a collapsible water retainer. The other product descriptions do not list that feature, so discuss drainage, shower layout, and water control with your installer before choosing a base.
Compare surface texture and material
Each listing describes a textured or slip-resistant floor, but the surface finishes differ. The Ella is acrylic; the WOODBRIDGE and ANZZI models use sheet-molded compound or SMC. Choose a surface that fits your cleaning preferences and intended use, and follow the manufacturer’s care instructions.
Plan the full accessible bathroom
A roll-in base is only one part of an accessible shower. Consider the entry path, room to maneuver, shower controls, seating, grab bars, and water management as part of the complete plan. A product description alone cannot confirm that your finished bathroom meets a particular accessibility standard or building code.
Confirm installation requirements and included parts
Check what the package includes, especially the drain and any drain cover. The WOODBRIDGE descriptions specify thin-set mortar installation and an integrated tiling flange. Before ordering, review the manufacturer’s installation instructions and have a qualified installer confirm that the subfloor, plumbing, and wall assembly are suitable.
Frequently Asked Questions
What is a roll-in shower base?
It is a shower base designed to allow entry without stepping over a conventional raised curb. The exact transition depends on the base and how it is installed with the surrounding floor.
Which option has a collapsible water retainer?
The Ella base includes a flexible water retainer that is designed to compress flat underfoot or beneath a shower chair or wheelchair. The other product descriptions do not list this feature.
Which base has a reversible drain?
The ANZZI model has a reversible drain layout for left- or right-side placement. Confirm the exact installation plan and drain parts with the seller and installer.
Are drains included with these shower bases?
The Ella and both WOODBRIDGE listings say their drains are not included. The ANZZI listing specifies a matching drain cover, but check the full package details to confirm which drain components are supplied.
Can a zero-threshold base be installed in an existing bathroom?
It may be possible, but the result depends on the floor, subfloor, plumbing, and installation method. The WOODBRIDGE descriptions include flush and low-profile approaches. Have an installer assess your bathroom before choosing a base.
Does an ADA-compliant shower base make the whole shower ADA compliant?
No. The complete layout and installation matter, including the approach, clearances, fixtures, and other features. Confirm applicable requirements with a qualified professional or local building authority.
How do I choose between a center drain and a side drain?
Begin with the existing plumbing location and the base’s drain layout. A center drain may suit a center-drain setup, while a side or reversible drain can be useful when the plumbing is positioned differently. Moving plumbing may add work, so confirm feasibility before ordering.
Final Recommendation
For a tub-replacement project that needs a right-side drain and added water control, the Ella is the most distinctive choice because it combines a zero-step entry with a collapsible retainer. If drain flexibility matters more, consider the ANZZI’s reversible layout. The WOODBRIDGE bases offer low-profile installation choices, but check their availability and confirm that their center drains suit your plumbing. Measure carefully and review the full installation plan before buying any roll-in shower base.
