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Which Ella two-person walk-in tub is the largest model available?

Updated November 2026

The largest two-person walk-in tub Ella's Bubbles makes is the Big4Two, at 36 inches wide by 80 inches long by 40 inches high, with two seats facing each other and a 145 gallon unoccupied capacity. The Escape is the other large two-seater at 36 by 72 by 40 inches with the same 145 gallon capacity, and the Tub4Two brings two seats into a 60 inch opening. What is the biggest bathtub Ella's Bubbles makes for home use? ranks every large model, single seat and two seat together; this page puts only the two-person tubs side by side and explains what separates them.

The Two-Person Ella Tubs Compared

The table uses only figures printed in the published Ella guides and our team's answer. Where a figure is not published, the cell says not listed.

ModelActual sizeSeatsHolds unoccupied (occupied)DoorBest for
Big4Two36 by 80 by 40 inchesTwo seats, 22 and 24 inches, facing each other145 gallons (85 to 135 gallons)Outward swing, plastic composite and tempered glass, 3 latch gear and shaft mechanismThe largest two-person tub and the longest footprint Ella makes
Escape36 by 72 by 40 inchesTwo seats, 27 and 29 inches145 gallons (85 to 135 gallons)Inward swing, brushed stainless steelTwo bathers where floor space in front of the tub is tight
Tub4Two32 by 60 by 40 inchesTwo seats, 20 and 22 inches100 gallons (65 to 85 gallons)Outward swing, tempered glass panel in a white composite frame, 3 latch gear and shaft mechanismTwo seats inside a standard 60 inch opening
ShaK (single seat, for reference)36 by 72 inchesOne 28 inch seat145 gallonsnot listedOne very tall or wide bather who does not need a second seat

What the differences mean: three of these tubs share the top capacity of 145 gallons, so the word largest comes down to length and shape. The Big4Two adds 8 inches to the Escape and to the ShaK, and spends that length on two seats that face each other, which is why it has the longest footprint of any Ella tub. The Escape keeps the 72 inch length and divides it into two seats behind an inward-swing door, so it is the two-person choice when the room is 72 inches long or floor space in front of the tub is tight. The Tub4Two is the smallest route to two seats, holding 100 gallons inside the 60 inch opening most bathrooms were framed around. The ShaK is in the table as a reminder that a single very tall bather does not need a second seat to get the most room.

Why the Big4Two Counts as the Largest

Size on a two-seat tub is measured three ways: the footprint, the water it holds, and the room each bather has. The Big4Two leads on the first. At 36 by 80 by 40 inches it is the longest tub Ella's Bubbles makes, 8 inches longer than the Escape and the ShaK. On capacity it ties the other two at 145 gallons unoccupied, the largest figure in the lineup, and its occupied range of 85 to 135 gallons reflects two bathers displacing water at once. On seating, its two seats measure 22 and 24 inches across and face each other, so each bather has a seat and the open floor between them is where feet go. A single bather can sit on one seat and stretch out with feet up on the second, which is the most stretching-out room a single bather can get in an Ella tub.

The Escape is the same width and height and holds the same water, so for two bathers who are not especially tall it delivers a very similar bath in a shorter tub. The question that separates them is whether your bathroom has 80 inches of length, and whether it can give up floor space in front of the tub for the door.

The Door Decides the Floor Space You Need

The Big4Two uses the U-shape outward-swing door: plastic composite and tempered glass, closing on a 3 latch gear and shaft mechanism, swinging out into the room. An outward-swing door gives a wide, easy entry, but you need clear floor space in front of the tub for it to open. The Escape uses an inward-swing brushed stainless steel door that opens into the tub, which helps when floor space is tight and is why it suits a bathroom where a vanity or toilet sits close to the tub. The Tub4Two also swings outward, with a tempered glass panel in a white composite frame on the same 3 latch mechanism.

When you are choosing between them, measure the floor area in front of the tub as carefully as the alcove itself. The walk-in tub models and sizes overview puts it plainly: the standard walk-in tub door swings inward, and if you prefer an outward swing you need to think about how much clear floor space you have in front of the tub.

A Two-Seat Tub for One Tall Bather

Many people searching for the largest two-person tub are shopping for one tall or large bather, not two. The two-seat models do give a single bather an exceptional amount of room, with feet up on the second seat. But the largest single-seat tub is a different answer. The ShaK, at 36 by 72 inches with an extra-wide 28 inch seat and 145 gallons, is the largest single-seat walk-in tub Ella makes, and in Ella's video bathers up to 6 feet 10 inches fit comfortably. The Big4One, at 33 1/8 by 66 inches with a 24 inch seat, holds 127 gallons unoccupied and 75 to 100 gallons occupied, and is the large single-bather choice when the room cannot take 72 inches.

Height alone does not pick the tub. Your seated hip width, shoulder width and head-to-feet length decide the fit, and the seat must be wider than your seated hips. Ella seat widths run from 19 inches on the Petite and Transfer26 to 29 inches on the TransferXXL, so a bather who is wide but not tall may be happier in a transfer tub than in any two-seater. What size walk-in tub fits a six-foot-tall person? works through that choice, and Which walk-in tub fits a 6 foot 5 bather with a long torso? covers the very tall bather and the seat-to-overflow figure a long torso changes.

Accessories Made for Bathing as a Couple

The Big4Two has its own set of options, and the video on this page shows them. A four-fold glass screen can be combined with a three-fold glass screen to create a bright and airy alternative to a shower curtain along the long rim. Dual rain shower heads provide a soft rain shower for both ends of the tub, allowing one bather to stand while the other sits safely. Dual extendable multi-function hand showers are the other option, one for each end. These are details to settle at order time, because they are chosen with the tub.

What to Measure Before You Decide

  1. Sit in a chair facing a wall in a relaxed position and measure your hips while seated, your shoulder width while seated, and your length from head to feet. Do this for both bathers if two people will share the tub, and compare each set with the seat widths above.
  2. Measure the alcove length and width. The Big4Two needs 80 inches of length and 36 inches of width, the Escape needs 72 by 36 inches, and the Tub4Two fits a 60 inch opening at 32 inches wide.
  3. Measure the clear floor space in front of the tub if you are considering an outward-swing door, or look at the Escape if that space is not there.
  4. Confirm the fit with your Ella dealer or the team at (800) 480-6850, who can check the figures against your bathroom measurements. The biggest walk-in bathtub size guide is the companion page if a single long seat turns out to be what you need.
Video
Chapters in this video
  1. 0:00 Big4Two Tub Accessories This video introduces exclusive accessory options for the Ella's Bubbles Big4Two walk-in tub.
  2. 0:24 Dual Rain Shower Heads Dual rain shower heads provide a soft shower for both ends of the tub, allowing bathers to stand or sit.
  3. 0:38 Dual Hand Showers Dual extendable multi-function hand showers offer another convenient bathing option.

Watch: Big4Two: 2 Person Walk-In Tub Accessories For Couples | Ella's Bubbles with chapters and a full transcript.

Video
Chapters in this video
  1. 0:00 Introducing the Big4Two Walk-in Tub This chapter introduces the Big4Two walk-in tub, highlighting its spacious interior and comfortable soaking dimensions.
  2. 1:03 Fast Fill and Innovative Jetting The video showcases the fast-fill faucet, innovative jetting design, and various massage features including air, hydro, and foot massage.
  3. 2:09 Heated Seats and Dual Drain This section details the optional heated seats and the exclusive dual drain technology for fast and efficient drainage.
  4. 2:33 Glass Screen and Secure Door The video presents the optional four-fold glass screen and demonstrates the secure, leak-proof door closure mechanism.
Video
Chapters in this video
  1. 0:00 Introducing the Big4Two Walk-In Tub This chapter introduces the Big4Two walk-in tub, highlighting its large interior soaking space and easy entry features.
  2. 0:33 Innovative Jetting and Massage Features The video showcases the tub's fast-fill faucet, air massage with auto purge, hydro massage, and independent foot massage.
  3. 1:15 Ozone Sterilization and Heated Seats This section covers the eco-friendly ozone sterilization and the option for heated seats for added comfort.
  4. 1:49 Dual Drain Technology and Accessories The video explains the exclusive dual drain technology for fast drainage and the optional 4-fold glass screen.
  5. 2:14 Secure Door and Therapeutic Benefits The chapter details the secure, leak-proof door mechanism and the tub's ability to meet various bathing and therapeutic needs.
Video
Chapters in this video
  1. 0:00 Introducing the Big4Two Tub This chapter introduces the Big4Two, the largest two-seat walk-in tub, highlighting its low threshold, easy entry, and textured floor.
  2. 0:45 Innovative Jetting and Controls This chapter showcases the innovative jetting design, digital touch controls for air massage, hydro massage with an inline heater, and ozone sterilization.
  3. 1:32 Foot Massage and Spacious Design This chapter demonstrates the powerful foot and calf hydro jets and emphasizes the spacious design for two bathers or solo enjoyment.
  4. 2:14 Dual Drain and Secure Door This chapter highlights the exclusive dual drain technology for fast draining and the secure three-latch gear and shaft door mechanism.

Common Questions

Is the Big4Two bigger than the Escape?
Yes, in footprint. The Big4Two is 36 by 80 by 40 inches and the Escape is 36 by 72 by 40 inches, so the Big4Two is 8 inches longer. Both hold 145 gallons unoccupied and 85 to 135 gallons occupied.
Which two-person walk-in tub fits a 60 inch alcove?
The Tub4Two, at 32 by 60 by 40 inches, puts two seats of 20 and 22 inches inside a standard 60 inch opening. It holds 100 gallons unoccupied and 65 to 85 gallons occupied. Its door swings outward, so allow clear floor space in front of it.
Can one person use the Big4Two comfortably alone?
Yes. A single bather sits on one seat and rests their feet on the second, which is the most stretching-out room a single bather can get in an Ella tub. If one long seat is what you really need, the ShaK is the largest single-seat model at 36 by 72 inches with a 28 inch seat.
Which way does the Big4Two door swing?
Outward. The Big4Two uses the U-shape outward-swing door made of plastic composite and tempered glass with a 3 latch gear and shaft mechanism, so you need clear floor space in front of the tub. The Escape's brushed stainless steel door swings inward instead.
Do the two-person tubs hold more water than the ShaK?
No. The Big4Two, the Escape and the ShaK all hold 145 gallons unoccupied, the largest figure in the Ella lineup. The two-seat tubs list an occupied range of 85 to 135 gallons because two bathers displace water at once.
Is the Tub4Two the same model as the Big4Two?
No. The Tub4Two is the 32 by 60 inch two-seat tub with 20 and 22 inch seats, and the Big4Two is the 36 by 80 inch two-seat tub with 22 and 24 inch seats. Both have outward-swing doors, but they differ in length, width and capacity.

About this guide. Answers in the Ella’s Bubbles Support Center are compiled from real conversations with tub owners, our technicians’ notes and the product documentation, then reviewed by our team. Tub models and options have evolved over the years, so a detail here may differ slightly from your exact tub. If something looks different on yours, send us your serial number and a specialist will confirm it for your model.

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