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$1.23/Pack

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Regularly: $1.49/Pack
  • Up to 2500 rated hours of luminescence
  • 1100 lumens
  • Frosted finish with medium base
  • Built to withstand external stresses without damage
  • C11/5 filament wire for durability
  • Dimmable design
  • 130V
UPC Code: 045923039713
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Satco S3971 Specs
Length 4 1/8 Inches
Diameter 2 3/8 Inches
Voltage 130
Wattage 100 Watts
Application Rough Service
Base Style Standard / Medium
Brightness 1,100 Lumens
Bulb Shape A Series
Burn Time 2,500 Hr.
Features Dimmable
Finish Frosted
Type Incandescent Bulbs
Usage Indoor

Customer questions about this product

I installed this bulb and it doesn’t seem as bright as the one I was replacing. What gives?
This is a commercial/ industrial bulb designed to withstand power surges. While it will operate on a household 120 volt electrical connection, it actually requires a 130 volt electrical connection to produce the full rated lumens. The light lumen output will go down about 24% when used in a 120 volt circuit, but the life of the bulb will last 280% longer than it would in a commercial/industrial setting with a 130 volt circuit.
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Satco S3971 Details

Built to resist shock, vibration, and other external stresses that can cause damage to standard incandescent bulbs, this Satco S3971 100 watt frosted incandescent bulb is the rough service lighting solution you need at your commercial establishment! Boasting 2500 rated hours of light, this bulb features a C11/5 filament wire and medium base, which ensures long-lasting use and cuts back on replacement costs.

This 130V bulb emits 1100 lumens and is perfect for use in commercial settings.

Overall Dimensions:
Maximum Overall Length (MOL): 4 1/8"
Maximum Overall Diameter (MOD): 2 3/8"

  • RoHS Compliant

    RoHS Compliant

    This item complies with the standards imposed by the Restriction of Hazardous Substances Directive, which restricts the use of certain hazardous substances in electrical equipment.

Resources and Downloads for
Satco S3971

Spec Sheet Specsheet

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Customer Reviews

  • Overall User Rating: Satco S3971 100 Watt Frosted Finish Incandescent Rough Service Light Bulb - 2/Pack

    5.0 stars from 10 reviews

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    People Talk About:

    bulbs light bulb pack frosted great needed watts finish Incandescent
  • Arrange by 
    These are a great deal. They are a full hundred watts and rough service, with a long lifespan. Incandescent bulbs aren't used a lot these days, but it is nice to know that when they are needed, this pack of 2 is around to fill that need affordably.
    100 watts, this Satco Incandescent bulb has a frosted finish. It delivers bright light shining with up to 2500 hours of luminescence, and this rough service bulb comes two to the package.
    Set one of these bulbs up in my basement/laundry area and it provides plenty of light. Since it's a fairly high wattage, the energy costs are a bit high, but the life expectancy is rated at 2-4 years.
    This 100 watt light bulb costs less and is rated at 710 lumens. The site suggests it will last up to 2500 rated hours of luminescence. The bulb has a frosted finish and can be used with a dimmer light switch. We prefer purchasing bulbs here on the site because we do not have to waste time going to the store. These bulbs come in packs of 2.
    This two pack of 100 watt light bulbs worked very well. The color is bright but the frosted effect is subtle. I would highly recommend.
    Satco S3971 100 Watt Frosted Finish Incandescent Rough Service Light Bulb - 2/Pack is a lovely item AND a bargain being a 2-pack for such a low price. Very nice!
    nice light bulb with many uses, great quality and very cheap to buy, they can be used outside and inside, shatter proof and hearty. best light bulbs.
    Great deal on this two pack of lightbulbs from the Webster on store they both seem to work just fine none of them were broken or anything like that
    We needed shatterproof lights in order to comply with health code regulations. Was very happy to see webstaurant carried these. Two one hundred lot bulbs in one pack.
    We just replaced all of the bulbs in our house with satco bulbs, and so far they are great. We had never used them before and so we were a little nervous, but we haven't had any issues. We did have a few that looked like they had gotten wet in transit, so that makes us a little uneasy but other than that, no complaints!

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