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Call or text 303-736-9856
Call or text 303-736-9856
How to Measure Your Pool or Spa Light and Niche for Replacement
Choosing the right replacement light for your pool or spa starts with one simple step: measuring your existing light (the outer widest trim diameter). Getting the right fit ensures your light will install properly and operate safely.
Step-by-Step: How to Measure Your Pool Light and Niche:
- Turn off the power to your pool or spa light at the circuit breaker. Safety first!
- Light: Measure the diameter of the front face (lens) of the light fixture - this is the overall size (6" spa or 10" pool, rounded)
- Niche: Remove the light fixture from the wall. Most are held in by a single screw at the top (called the "set screw"). Let the fixture rest on the pool deck. Measure the opening - this is your niche size.
Standard Light Sizes:
Most pool and spa lights fall into one of these three categories:
| Type | Typical Size | Description |
|---|---|---|
| Pool Light | 10" | Most in-ground pool lights use a 10” diameter fixture |
| Spa Light | 6" | Smaller spas and hot tubs use a 6” diameter fixture |
| Uncommon Size | 8" | Some older or custom-built pools may have a rare 8” light niche |
Important: These sizes refer to the outer ring — not the internal niche. Always measure the actual light fixture faceplate
Diagram: Measuring Your Pool Light
Pro Tip:
If you're unsure, take a photo of the fixture next to a measuring tape and send it to our team — we’re happy to help you confirm the correct size!
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Give us a call or text at 303-736-9856 or email sales@vitafilters.com — our team is here to help you get the right fit, fast.