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Support Center / Sizes, Fit & Measuring / Will it fit my alcove? Extension panels, end panels, and 60 inch spaces

Will it fit my alcove? Extension panels, end panels, and 60 inch spaces

Updated September 2026

Yes, an Ella walk-in tub will fit your alcove. Every model is designed for the classic three-wall alcove where a standard 60 inch bathtub used to sit, and each one can also stand against one or two walls. The quick answer on alcove fit: most 52 inch and 55 inch long models include a factory extension panel that fills the gap in a standard 60 inch alcove, while the 60 inch and longer tubs fill the space on their own and neither need nor offer one. This guide lists the extension panel for every model, explains end panels, and walks through the planning steps that make an alcove installation go smoothly.

Ella walk-in tub with a label pointing to the removable extension panel that fills the gap to the alcove wall
The extension panel bridges the space between a 52 inch or 55 inch tub and the 60 inch alcove wall.

Which Models Include an Extension Panel

ModelTub lengthExtension panel for a 60" alcove
Standard, Zen, Flow52 3/4" / 52" / 48"Included
Ultra52.125"7" panel included
Elite, Petite, Royal52"7" panel
Deluxe55"4" panel
Capri, Monaco52"8" panel
Lounger59"Available
Transfer26, Transfer30, Transfer3252"8" panel
TransferXXL55"5" panel

The panel is trimmed on site, so it also copes with an alcove that is slightly out of square. For the full model-by-model kit details, see extension panels and filler kits by model.

Models with No Extension Panel

These tubs are already full length or are configured differently, so no extension panel is offered: Ultimate, Standard60, Zen60, Transfer60, Big4One, ShaK, Front Entry, Mobile, and all two-seat models (Tub4Two, Companion, Escape, Big4Two). If your alcove is longer than one of these tubs, your installer can frame and finish the remaining space. A 60 inch tub such as the Ultimate is actually 59.5 inches long, so it fits a 59.5 inch opening.

See How Extension and End Panels Work

This short video explains that every tub ships with one reversible end panel, placed on the side opposite the corner to cover the plumbing and frame, and that a second panel can be purchased when both ends are exposed. Tubs under 60 inches long include an extension panel that can go on the left or the right to fit a 60 inch alcove, and you can opt out of either panel at order time. It also shows the removable front apron with its two access panels, attached by clips, screws, hook-and-loop strips, tape or magnets depending on the model, and reminds you that all removable panels, aprons and extension panels must come off before the tub is carried into the house.

The second video focuses on the filler kit itself: the panel can be trimmed to fit an out-of-square or unusual alcove, placed on the right or left of the tub, and it doubles as a handy shelf. It rides on integrated adjustable stainless steel shelf support brackets that are part of the tub frame, so the panel and its silicone bead stay put for years.

End Panels and Exposed Sides

Ella walk-in tub with an arrow marking the reversible end panel that finishes an exposed side
The reversible end panel finishes whichever short end of the tub is exposed.
  • One reversible end panel is included with your tub, so the finished end can face either direction.
  • If your installation exposes both ends of the tub, a second end panel can be purchased.
  • The Ultra also includes a reversible end panel along with its 7" extension panel.
  • End panels do not add length to the tub; only the extension panel fills the alcove gap.
  • No Ella model is truly freestanding on all four sides. If the long back side will show, ask the team about a panel for that side before ordering, and read freestanding and exposed-side installations.

Planning Tips for Alcove Installations

  1. Measure the alcove length wall to wall at the tub deck height, not just at the floor.
  2. Check the door side. A right-side door pairs with drains on the left and connects to the house drain on the left, and vice versa, so confirm which side your house drain is on with your installer. Our guide to choosing left-hand or right-hand covers this decision.
  3. Preserve service access. An alcove hides the tub sides, and the front apron access panels become the main service route, so ask your installer about adding wall access panels on the plumbing end. See planning service access.
  4. For wall finishing, an aftermarket tile flange strip (any 1/8" or 3/16" rustproof waterproof strip about 5" tall) is glued with 100 percent silicone, overlapping the tub edge by 2", and your tile or wall panel then overlaps the flange. Full details are in tile flange and wall finishing.
  5. Confirm the actual exterior size on the spec sheet rather than the rounded name; the dimensions by model table lists every one.
Ella extension panel kit with white acrylic panel, stainless steel mounting brackets and hardware
An extension panel kit: the acrylic panel, stainless brackets and mounting hardware.

Thinking About a Recessed or Below-Floor Drain?

Please talk to us before cutting anything. Cutting the apron or end panel for a below-subfloor drain recess voids the warranty on the altered parts, so we want to help you plan an approach that protects your coverage. Our article on lowering the tub and recessed installations explains the options.

Common Questions

What fits a 58.5 by 29 inch space?
The Deluxe at 29.5 by 55 inches and the Lounger at 27 by 59 inches are the two models the team usually points to for an opening of that size. The Deluxe includes a 4 inch extension panel and one is available for the Lounger, and either panel is trimmed on site to suit the remaining gap. Measure the width at deck height rather than at the floor, and confirm the door swing for your layout before deciding.
What is the exact length of the LayDown60?
The LayDown60 is 59 3/4 inches long, with an overall size of 30 inches wide by 60 inches long by 21 inches high printed on its spec sheet. That length fills a standard 60 inch alcove without an extension panel. As with every model, measure your alcove wall to wall at deck height and compare it with the actual size on the spec sheet rather than the rounded name.
Is there a 36 by 60 tub?
No, Ella does not build a 36 by 60 inch tub. The 36 inch wide options are the TransferXXL 36x55, the ShaK 36x72, the Escape 36x72 and the Big4Two 36x80. A 36 inch wide alcove that is 60 inches long can take the TransferXXL with its 5 inch extension panel, which is trimmed on site to close the remaining gap.
Can the extension panel go on either end of the tub?
Yes. The panel and its brackets can be set on the left or the right of the tub, so it can sit at the faucet end or the seat end, whichever suits your layout and where your house drain connects. The panel also doubles as a handy shelf, so many owners choose the end where a shelf is most useful. Tell your Ella dealer or the team at (800) 480-6850 which end you plan to use so the brackets ship correctly.
My alcove is longer than 60 inches. Can I use two extension panels?
Extension brackets can be fitted to both ends of the tub when that is specified before ordering, and a second extension panel can be purchased to fill the other side. For a much longer opening, it is often simpler and neater to have your installer frame and finish the extra space at one end instead. Share your alcove measurements with your Ella dealer or the team at (800) 480-6850 before you decide so the right brackets and panels ship with your order.
Will a 52 inch tub fit a 53 inch opening?
Yes. The tub sits in the opening and the extension panel is trimmed on site to the small remaining gap, or omitted entirely if the fit is snug. Because the panel is cut to fit, it also copes with an alcove that is slightly out of square. Always measure at deck height and check the actual exterior size on the spec sheet, since the rounded model name and the true size can differ.
I have a 48 inch alcove. Is there anything that fits?
Yes, there are a few options. The Mobile at 45 inches long and the Front Entry at 40 inches long are the shortest models in the line, and the Flow is 48 inches long, so all three are candidates for a 48 inch alcove. Confirm the width of your space and the door swing for the model you prefer, and share your measurements with the team at (800) 480-6850 or through ellasbubbles.com/support so they can confirm the fit.
Do I need the end panel in a three-wall alcove?
No. In a full three-wall alcove neither short end of the tub is exposed, so the end panel is not needed; it is intended for corner installations where one end shows. You can opt out of the end panel at order time, and if your plans change later, end panels remain available as add-on parts.
How do I get a replacement or extra panel later?
End panels, extension panels and front aprons are all available as replacement or add-on parts after your tub is installed. Open a ticket at ellasbubbles.com/support with your model, serial number and a photo of the exposed side so the team can match the correct part to your tub. The details are in end panel and extension panel replacements.

Still need help? Open a support ticket at ellasbubbles.com/support and the team will be glad to confirm the exact numbers for your model, or call (800) 480-6850.

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