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Clear S11 incandescent bulb with E17 intermediate base

Satco

Satco S3729 40 W S11 Clear E17 Intermediate Base standard bulb

SKU CH-3YB8-CC8P2

A 40 W incandescent bulb with an E17 intermediate base, clear finish, 370 lumens and a 1500-hour rated life

  • Power rating40
  • Equivalent wattage40
  • Light output370
  • Lamp baseIntermediate S11
  • Lifespan (hours)1500
  • Sold asEach
  • 40 W incandescent output for familiar warm light
  • 370 lumen brightness suits accent and task fixtures
  • Clear S11 glass shows crisp filament look
  • E17 intermediate base fits specialty sockets directly
  • 1500 hour rated life reduces replacement frequency

Satco S3729 Incandescent Standard Bulb

The Satco S3729 is a 40 W incandescent lamp built on an S11 envelope with an E17 intermediate screw base. It produces 370 lumens of clear light and carries a rated life of 1500 hours. This item suits fixtures that require a small intermediate-base bulb.

Fit for E17 intermediate sockets only

Households and maintenance teams needing a direct replacement for an E17-base lamp will find the correct fit here. Buyers whose fixtures take a different base size cannot use this bulb. Shoppers seeking longer-life or lower-energy technologies should consider other types.

Base type E17 intermediate screw

The E17 intermediate screw base is the single specification that decides whether this lamp will install in the intended socket. Verify the fixture calls for an E17 base before purchase.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $1.19
Cheaper than about 99% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameSATCO
Product typeIncandescent Light Bulbs
Product colorClear
Display
Light output370
Power
Power rating40
Equivalent wattage40
Size & build
Lamp baseIntermediate S11
More details
Lifespan (hours)1500

Questions about this item

How hot does the 40 W filament get during all-day use?

The 40 W incandescent filament reaches typical operating temperature within minutes and radiates most input power as heat, so the glass envelope becomes too hot to touch during continuous operation.

Does the E17 base fit my existing intermediate-base socket?

Yes, the E17 intermediate screw base (often called S11) is designed for standard intermediate sockets found in many appliances and specialty fixtures.

Will the 370 lumen output match the older 40 W bulb I am replacing?

This lamp produces 370 lumens at 40 W, matching the typical output of a standard 40 W incandescent, so brightness will appear the same.

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