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End Panel Too Long for the Opening: Trimming It to Fit

Updated September 2026

Yes, if the end panel is longer than the opening between the finished wall and the front apron, trim it. Take the material off the edge that will sit against the wall or tile, and remove only enough for the panel to slide into place. The end panel is a cosmetic cover with no structural role. It is held by two screws at the bottom that fasten it to the mounting brackets, so trimming a fraction of an inch does not weaken the tub or leave the panel loose.

Why the Panel Can Be Too Long

End panels are molded to cover the full end of the tub with a little overlap. When the tub sits in a corner with one end open and the wall is finished with tile or backer board, the opening between the wall and the front apron can end up narrower than the panel by a small amount, sometimes only a fraction of an inch. That is enough to keep the panel from dropping in. Pulling the tub away from the wall to make room is the wrong fix, because it leaves a gap between the wall and the end of the tub. Trimming the panel is the fix support recommends.

Measure Before You Cut

  1. With the tub in its final, leveled position and the front apron installed, measure the opening from the finished wall surface to the edge of the apron where the end panel seats. Measure at the top and at the bottom, since walls are rarely plumb.
  2. Measure the end panel along the same edge and note the difference.
  3. Mark the cut line on the wall-side edge of the panel using the larger of the two differences, and add nothing extra. You can always take a little more off.

Trimming the Panel

  1. Run painter's tape along both faces of the panel over the cut line to protect the finish as the blade passes through.
  2. Cut with a fine-toothed blade, supporting the panel on a flat surface so it does not flex or vibrate.
  3. Smooth the cut edge with a sanding block so it sits cleanly against the wall.
  4. Test fit the panel and drive the two bottom screws into the brackets. Trim a little more if it still binds.
  5. Cover the screws with the trim caps and caulk the wall joint as described in will it fit my alcove.

About the Return Lip on the Wall Side

The end panel runs across the end of the tub and then bends over with a short return, about an inch, on the side that goes against the wall. Trimming the panel to fit usually means taking some or all of that lip off. Installers sometimes worry that this removes the panel's support on the wall side. Support confirms it does not matter: the panel has no structural components, and it is held by the two screws at the bottom into the mounting brackets. It will not flap or rattle when the pumps run.

When the Gap Is at the Wall Instead

If the panel fits the opening but leaves a gap at the wall, the fix is the extension or filler panel supplied for the model, not a longer end panel. See extension panels and filler kits by model for what ships with each tub. If you need the white trim caps that cover the bottom screws, where to get the white screw caps explains how to request them.

Common Questions

Will cutting the end panel weaken the tub?
No, cutting the end panel will not weaken the tub. The end panel is a cosmetic cover with no structural role, and the tub is supported by its frame, not the panel. Trimming the end panel to fit the opening is a normal part of installation and does not affect the tub's stability or structural integrity.
Which edge of the end panel should I trim?
You should trim the edge of the end panel that will sit against the finished wall or tile. It is important to leave the edge that meets the front apron intact so that the screw holes on the panel still align with the mounting brackets. This ensures the end panel can be properly secured after trimming.
What holds the end panel in place after it is trimmed?
After trimming, the end panel is held in place by two screws at the bottom that fasten it to the mounting brackets. Support confirms that these two screws hold the panel securely, even if the wall-side return lip is trimmed away. The panel will not flap or rattle when the pumps run.
What is the best way to cut the acrylic panel?
The best way to cut the acrylic end panel is to use a fine-toothed blade. To protect the finish as the blade passes through, run painter's tape along both faces of the panel over the cut line. Support the panel on a flat surface while cutting so it does not flex or vibrate, and smooth the cut edge with a sanding block afterward for a clean fit against the wall.
Should I pull the tub away from the wall instead of cutting?
No, you should not pull the tub away from the wall instead of cutting the end panel. Moving the tub away from the wall to create more space will leave an undesirable gap between the wall and the end of the tub. Trimming a fraction of an inch off the end panel is the correct fix that support recommends for a proper installation.

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