Choosing a Shower Enclosure: Fit, Glass, Drainage, and Installer Questions

Choose a shower enclosure that fits the opening

Compare the finished opening, shower base, wall plumbness, door clearance and the exact enclosure's installation requirements before ordering. A door that fits the width may still conflict with a vanity, toilet or the shower's waterproofing.

Measure and compare

1. Measure the finished opening at the bottom, middle and top, and check both walls for plumb. Use the model's instructions and have the installer confirm measurements before ordering.
2. Check the base or curb type, minimum threshold width, enclosure height and clearance for a pivoting door. A sliding door needs less outward swing but may have a narrower entry.
3. Compare glass, framing, hardware finish, cleaning and replacement-part support. Confirm the glass and installation meet applicable local requirements.
4. For a curbless or low-curb design, have an installer assess drainage and splash containment. Resolve existing leaks or uncertain waterproofing before enclosing the shower. Ask who is responsible for substrate, anchoring, sealing and leak testing.

For example, one Kohler sliding-door manual permits up to 3/8 inch out of plumb, while another permits 1/8 inch; those limits are model-specific. Tempered glass can shatter if an edge is damaged. Use a qualified installer when measurements, anchoring or glass handling are uncertain.

Sources

• Kohler: Sliding Shower Door Installation Instructions 1443363-2-B — model-specific plumb and glass-handling requirements; accessed October 27, 2026.
• Kohler: Sliding Shower Door Installation Instructions 1495926-IN2 — India-market example with a different model-specific wall tolerance; accessed October 27, 2026.
• Schluter: Curbless Shower Systems and Solutions — slope, drainage and waterproofing in a curbless shower; accessed October 27, 2026.

Related: investigating a shower leak.