SuperPro 400W 120V R40 Medium Base Bulb In stock$2611
Quick overview
- 400 watts at 120 volts The full size lamp rating used in large underwater pool light fixtures.
- R40 reflector shape The wide reflector envelope that throws light forward through the lens.
- Medium screw base Standard medium base, so it threads into the fixture socket without an adapter.
- SuperPro part R40FL400/HG An economical replacement for the original lamp.
- Match your fixture first Wattage, voltage and base all have to match what came out, and a light niche is not the place to improvise.
- Handle with clean hands Skin oils on the glass shorten lamp life, so hold the base and keep the envelope clean.
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Product details
The SuperPro R40FL400/HG is a 400 watt, 120 volt replacement bulb in the R40 reflector shape with a standard medium screw base.
What the ratings mean
R40 describes the envelope: a wide reflector that gathers light and throws it forward, which is exactly what an underwater fixture needs to push light through the lens and out into the pool. The medium base is the same screw thread as a common household lamp, and the 400 watt, 120 volt rating puts it in the large fixture class.
Check before you order
All three numbers have to match the fixture: wattage, voltage and base. A 12 volt fixture cannot take a 120 volt lamp, and fitting a bulb above the rated wattage builds heat the housing was never designed to shed. The rating is printed inside the fixture, so read it rather than working from the old bulb alone, which may itself have been the wrong part.
Fitting
Kill the power at the breaker before opening the light. Handle the new lamp by its base, since oils from your fingers on the glass create hot spots that shorten life, and inspect the lens gasket while the fixture is open.
| Brand | SuperPro |
|---|---|
| Manufacturer part number | R40FL400/HG |
| Type | Light bulb |
| Wattage | 400W |
| Voltage | 120V |
| Bulb shape | R40 |
| Base | Medium base |
| Shipping weight | 0.35 lb |
| Ships | Parcel |
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