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What is the biggest bathtub Ella's Bubbles makes for home use?

Actualizado noviembre 2026

The biggest single-seat bathtub Ella's Bubbles makes is the ShaK, at 36 inches wide by 72 inches long with a 145 gallon unoccupied capacity, and the biggest overall footprint in the lineup belongs to the two-seat Big4Two at 36 inches wide by 80 inches long. Which one counts as the biggest tub for your home depends on whether you want one long seat, two seats, or a flat floor to lie on, and on whether your bathroom can give up 72 or 80 inches of length. What is the biggest walk-in bathtub size you can buy? ranks the large single-seat models; this page puts the single-seat, two-seat and lie-down options side by side so you can see every route to the most room.

The Largest Ella Tubs Side by Side

ModelActual sizeSeatingHolds unoccupiedBest for
ShaK36 by 72 inchesOne 28 inch wide seat145 gallonsThe tallest and widest single bather; bathers up to 6 feet 10 inches fit comfortably in Ella's video
Big4Two36 by 80 by 40 inchesTwo seats, 22 and 24 inches, facing each other145 gallons (85 to 135 gallons occupied)The longest footprint of any Ella tub; two bathers, or one bather with feet up
Escape36 by 72 by 40 inchesTwo seats, widths not listed145 gallons (85 to 135 gallons occupied)Two bathers behind an inward-swing stainless steel door
Big4One33 1/8 by 66 inchesOne 24 inch wide seat127 gallons (75 to 100 gallons occupied)A large single bather when the room cannot take 72 inches
LayDown 32x7232 by 72 inches, 61 inch interior lengthNo molded seat, flat floor end to endno apareceLying back at full length rather than sitting
Tub4Two32 by 60 by 40 inchesTwo seats, 20 and 22 inches100 gallons (65 to 85 gallons occupied)Two seats inside a standard 60 inch opening

What the figures mean: three tubs share the top capacity of 145 gallons, so the word biggest is really a question of shape. The ShaK spends its size on one person, with the widest single seat and the longest single-seat interior. The Big4Two spends it on length, adding 8 inches to the ShaK's footprint so two people can face each other, and the Escape keeps the 72 inch length while dividing the space into two seats. The Big4One is the choice when 72 inches will not fit but the bather still needs a long seat and a large interior. The LayDown 32x72 is a different idea entirely, a 61 inch flat interior with no seat at all, for the bather who wants to stretch out flat. The Tub4Two shows the other end of the two-seat range: two seats inside the 60 inch opening most bathrooms were framed around.

The Biggest Tub for One Bather: The ShaK, Then the Big4One

Ella describes the ShaK as the largest single-seat walk-in tub in the world, designed for the tall and the wide. Its 28 inch seat and 36 by 72 inch footprint are why Ella's video shows bathers up to 6 feet 10 inches fitting comfortably, and its 145 gallon unoccupied capacity is the largest figure in the lineup. It enters through an outward-swing U-shape door, so nobody has to step around a door inside the tub. The Big4One is the extra-large single-bather tub one step down: a 24 inch seat, the same outward-swing U-shape door, 6 fewer inches of length and 127 gallons unoccupied, which works out to 75 to 100 gallons once a bather is seated. Both tubs suit people around six feet and taller because the seat and the interior are both long, and What size walk-in tub fits a six-foot-tall person? explains why that same length makes them a poor match for an average or shorter bather. Bigger is not automatically better, so if a shorter partner will share the tub, compare both sets of body measurements before you decide.

The Biggest Tub Overall: The Two-Seat Big4Two and Escape

If the question is simply which Ella tub takes up the most room and holds the most water, the answer is a two-seater. The Big4Two measures 36 inches wide by 80 inches long by 40 inches tall, seats two people facing each other on 22 inch and 24 inch seats, and holds 145 gallons unoccupied, or 85 to 135 gallons with bathers in it. Ella's product video calls it the largest two-seat walk-in tub on the market, and What is the Ella Big4Two two-seat walk-in bathtub, and who is it for? covers its door, shell and drains in full. The Escape has the same 36 inch width and the same 145 gallon fill in a 72 inch length, behind an inward-swing brushed stainless steel door rather than the Big4Two's outward-swing composite and tempered glass door.

A two-seat tub is also the roomiest choice for someone who usually bathes alone. In the two-seat video on this page, Ella explains that a true two-seater has two separate seats with their own jets and systems, and the presenter sits on one seat and kicks both feet up on the other, which the video compares to sitting in a big recliner with your feet on a sofa. You do not have to fill both seats every time you bathe. Can a walk-in tub hold two people at the same time? walks through all four two-seat models, including the Companion and the Tub4Two for a standard 60 inch alcove.

The Longest Tub for a Tall Bather Who Wants to Lie Back

Height alone does not pick the tub. A seated tub fits when the seat is wider than your seated hips, the interior has room for your shoulders, and the seat length matches the distance from the bottom of your backrest to the back of your knee, so sit in a chair and take those three measurements before comparing models. For a bather over six feet who would rather lie down than sit, the model Ella lists is the LayDown 32x72, with a 61 inch interior length, a flat floor from end to end and no molded seat. It offers the longest straight stretch of any Ella tub even though its 72 inch exterior matches the ShaK, because none of the interior is taken up by a seat. If you prefer to sit upright with full back support, the ShaK and the Big4One remain the long-seat choices, and the two-seat tubs give you the second seat as a footrest.

What a Tub This Size Asks of Your Bathroom

  • Floor length. The ShaK and Escape need 72 inches and the Big4Two needs 80 inches, all at 36 inches wide, which is well past the 60 inch opening most bathrooms were framed around. Plan the alcove from the actual size on the spec sheet and look over the walk-in tub drawings carefully.
  • The route in. The Big4Two ships crated at 38 by 82 by 50 inches and weighs 531 pounds in its crate, 328 pounds net. Measure every doorway and hallway between the delivery point and the bathroom against the crate before you order.
  • Hot water. The general guidance is a 75 gallon or larger water heater for an average walk-in tub, and the largest tubs such as the ShaK and Big4Two may require a dedicated additional heater. A tankless heater should be rated at 11 GPM or more. How long does it take to fill a walk-in tub? explains how the occupied capacity and your home's plumbing set the wait.
  • Fill and drain. The Ella faucet is capable of about 16 gallons per minute, and the two 2-inch gravity drains typically empty the tub in two minutes or less, so even a 145 gallon tub is not a slow tub to live with.

A tub this big can be too big for some needs. Share your bathroom measurements and your own seated measurements with your Ella dealer or the team at (800) 480-6850, and they can confirm which of the largest models fits both the room and the bather.

Video
Chapters in this video
  1. 0:00 Two-Seat Walk-In Tub Models The video introduces Ella's Bubbles two-seat walk-in bathtubs, available with either an outward or inward swing door.
  2. 0:21 Independent Seating and Systems Each seat in the two-seat walk-in bathtub has its own independent jets and systems for a personalized bathing experience.
  3. 0:53 True Two-Seat Bathtub Definition The video clarifies that a true two-seat bathtub features two independent bathing spaces, unlike an extra-large single tub.
  4. 1:11 Comfortable Solo Bathing Option The two-seat bathtub offers exceptional comfort for one person, allowing them to stretch out and relax like in a lounge chair.

Watch: Two Seat Walk-In Tub with Door: Best for Couples - Voted Best/Safest 2020 | Ella's Bubbles with chapters and a full transcript.

Video
Video
Chapters in this video
  1. 0:00 The World's Largest Tub A tall customer demonstrates the spacious interior of the Ella's Bubbles Shak walk-in tub.
  2. 0:23 Easy Entry And Exit A customer steps into the tub, highlighting the low threshold for easy access.
  3. 0:38 Independent Foot Massage Feature A customer enjoys the independent foot massage feature while comfortably seated in the tub.
  4. 0:57 The Ella Shak Walk-In Tub The video concludes by reiterating that the Ella Shak is the world's largest single-seat walk-in tub.
Video

Preguntas comunes

Which Ella walk-in tub is the biggest single-seat model?
The ShaK is the largest single-seat walk-in tub Ella's Bubbles makes, at 36 inches wide by 72 inches long with a 28 inch seat. It holds 145 gallons unoccupied, the largest figure in the lineup. Ella's video shows bathers up to 6 feet 10 inches fitting comfortably.
Which two-person walk-in tub is the largest Ella model?
The Big4Two is the largest two-seat model, at 36 inches wide by 80 inches long by 40 inches tall. It seats two people facing each other on 22 inch and 24 inch seats and holds 145 gallons unoccupied, or 85 to 135 gallons occupied. Ella's product video calls it the largest two-seat walk-in tub on the market.
What is the longest bathtub Ella makes for a tall person?
The longest footprint is the Big4Two at 80 inches, and the longest single-seat tub is the ShaK at 72 inches. For a tall bather who wants to lie flat, the LayDown 32x72 has a 61 inch interior length with no molded seat. Measure your seated hips, shoulders and backrest-to-knee length before choosing between a seated tub and a lie-down tub.
Can one person use a two-seat walk-in tub comfortably?
Yes. Ella's two-seat video shows the presenter sitting on one seat with both feet up on the other, which it compares to a recliner with your feet on a sofa. You do not need to fill both seats every time, and the two-seaters give a solo bather the most room to stretch out.
Does the biggest walk-in tub need a bigger water heater?
The general guidance is a 75 gallon or larger water heater for an average walk-in tub. The largest tubs, such as the ShaK and Big4Two, may require a dedicated additional heater. A tankless unit should be rated at 11 GPM or more, and your contractor should assess pressure and pipe runs before installation.
Will the largest Ella tub fit through my doorways and hallways?
That depends on the route into your bathroom. The Big4Two ships crated at 38 by 82 by 50 inches, so measure every doorway, hallway and turn against the crate size before ordering. Share those measurements with your Ella dealer or the team at (800) 480-6850 to confirm fit.

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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