Measure the opening at the intended rod position, identify the wall surfaces, and check the complete curtain drop. Then compare those measurements with the exact rod’s installation range and layout drawing.
Record the opening at the right position
Use a tape measure to record the wall-to-wall span where the rod will sit. Do not substitute the tub’s advertised length for the actual opening. If the walls are uneven or the layout changes with height, record the difference. Write the units explicitly so inches and centimeters do not get mixed when browsing.
Choose the hanging height as a system
The rod, hooks, panel, and liner all contribute to the final hem position. Work backward from the intended hem using the curtain length and actual hook drop. There is no single height that fits every curtain and shower. Check the installation instructions before marking the wall or adjusting an existing rod.
Map obstacles and wall requirements
Record shelves, handles, shower fittings, and doors near the hanging path. For a curve or a double rod, add its specified projection to your sketch. Identify the end surfaces and mounting construction. A tension range and a fixed-bracket mounting span may be described differently; use the exact instructions to interpret the dimensions.
Make a final pre-order check
Compare your span with the model’s permitted range, then verify mounting method, rod diameter, hooks, and package contents. If instructions are unavailable, resolve that gap before purchase. Keep your measurement note with the order so you can check the delivered variation before installation. Treat any example dimensions in a guide as examples, not a substitute for measuring.
Compare the essentials
| Write down | Reason |
|---|---|
| Wall-to-wall span at rod height | Compare with the permitted model range |
| Curtain length and hook drop | Determine the intended hem position |
| Wall surface and construction | Check mounting compatibility |
| Projection and nearby obstacles | Confirm curtain movement and room clearance |
Before you buy
- Record units and measure twice.
- Use actual opening dimensions.
- Account for hook drop and liner placement.
- Check the chosen model’s installation drawing.
Common questions
Can I round my measurement to the nearest product size?
Use the actual measurement and compare it with the specified range. Do not round in a way that places the opening outside that range.
Should I mark holes before the rod arrives?
Wait until you can verify the model, supplied parts, and installation instructions. Bracket spacing and fixing details are model-specific.
Explore the collections
Keep reading
Check span, mounting and the curtain path
Keep three measurements
Record wall-to-wall distance at the intended mounting height, usable curtain travel and nearby door or fixture clearance. A curved rod follows a different curtain path from a straight rod even when the wall-to-wall span is unchanged.
Check the selected adjustment range
A range such as 48–72 inches is not a promise that every surface, load or extension is suitable. Confirm the chosen model, supplied brackets and the manufacturer’s installation sequence.
Use the right document
Moen’s identification guide links different models to different installation sheets. Follow the sheet for the model you actually have instead of transferring anchor or mounting instructions from a similar-looking rod.
Worked examples and comparison framework: Bathroom Design Hub editorial analysis, reviewed October 31, 2026. No hands-on performance or installation test is claimed.
References for exact-product context: Moen: model-specific rod identification and installation
Prepared by Bathroom Design Hub. We compare source specifications and explain practical decisions; seller claims remain attributed. Our examples are calculations, not product test results. Read our editorial method
Sources & product instructions
Manufacturer and retailer references informed the relevant specifications and examples in this guide. General selection checklists are Bathroom Design Hub editorial guidance. Always follow the instructions for the exact product you choose.
- Moen: Tension Curved Shower Rod instructions (PDF)
- Moen: Adjustable-Length Curved Shower Rod instructions (PDF)
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