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Regularly: $2.29/Each

You must buy a minimum of 30 at a time due to manufacturer packaging.

  • Averages 24,000 rated hours of luminescence
  • 2400 lumens
  • CRI of 90
  • Medium bi-pin base (G13)
  • Color temperature: 6500K (daylight)
  • Uses less energy than comparable incandescent bulbs
UPC Code: 045923066382
Satco S6638 Specs
Length 48 Inches
Diameter 1 1/2 Inches
Wattage 40 Watts
Application General Service
Base Style Medium Bi-Pin
Brightness 2,400 Lumens
Bulb Shape T Series
Burn Time 24,000 Hr.
Color Temperature Daylight
Finish Frosted
Type Fluorescent Bulbs
Usage Indoor

Customer questions about this product

What does the number with “K” at the end mean?
Measured using the Kelvin Scale, this number refers to the color hue emitted by the bulb’s light. Lower Kelvin numbers will have a more yellow output while higher Kelvin numbers will let out a bluer light.
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Satco S6638 Details

Brilliantly illuminate your commercial kitchen, office, or hospitality space with this Satco S6638 HyGrade 48" 40 watt fluorescent light bulb! More sustainable than traditional incandescent lamps, fluorescent light bulbs allow you to cut back on utility costs while generally lasting longer and distributing brighter light at your establishment.

This efficient bulb has a CRI (Color Rendering Index) of 90, assuring your operation's lighting will be bright and direct. The bulb's instant start design allows the lamp to immediately light up with no flickering or noise, and delivers up to 24,000 hours of light. This medium bi-pin based bulb emits 2400 lumens at 6500K to provide a hue that's comparable to daylight.

Overall Dimensions:
Maximum Overall Length (MOL): 48"
Maximum Overall Diameter (MOD): 1 1/2"

Attention CA Residents: Prop 65 Warning

  • 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 S6638

Spec Sheet Specsheet

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Customer Reviews

  • Overall User Rating: Satco S6638 HyGrade 48" 40 Watt Daylight Fluorescent Light Bulb (T12)

    5.0 stars from 1 review


    People Talk About:

    service Proper price packed nice mandatory lighting great food establishments
  • Arrange by 
    Proper lighting is not only nice but also mandatory in food service establishments in some areas. These arrive packed well and for a great price.

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