Satco 40W 48 In. Daylight T12 Medium Bi-Pin Fluorescent Tube Light Bulb (S6638) (Minimum 30)
The Satco 40W 48 In. Daylight T12 Medium Bi-Pin Fluorescent Tube Light Bulb (S6638) by Satco is a Fluorescent Tube Light Bulb product. Available for delivery and in-store pickup at Family Hardware in Cape Coral and Fort Myers, FL.
Cape Coral: 0 available · Fort Myers: 0 available
Prices may vary slightly between stores.
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T12 fluorescent tube light bulb with medium bi-pin base. Professional grade fluorescent bulb featuring high lumen maintenance. Ideal for general purpose applications such as offices, garage, manufacturing settings, and more.
Satco item S6638 · UPC 045923066382
This is Satco S6638, a T8 / T12 lamp on a Medium bi-pin (G13) base. If you are replacing a bulb, the Satco number on the old sleeve or the fixture label is the surest way to match it — order by S6638 and you get the same lamp.
T8 and T12 linear tubes: what T8 / T12 means
Linear tubes on a medium bi-pin (G13) base. LED replacements come in three wiring types: ballast-compatible (plug and play), ballast-bypass (direct wire, the ballast is removed), and hybrid. Check the wiring type before ordering — it decides whether an electrician is needed.
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Base: Medium bi-pin (G13)
Medium bi-pin (G13) is the two-pin base on T8 and T12 linear tubes. The base has to match the socket exactly — wattage and colour temperature are choices, but the base is a fit.
Where this lamp is used
- Shop lights and troffers
- Garage and basement strip fixtures
- Retrofitting fluorescent tubes to LED
- Sold in multi-packs and cases
Buying more than one
Most Satco lamps are stocked in multiples and many are sold by the case. Bulbs in a shared fixture age together, so relamping the whole fixture at once keeps colour and brightness matched and saves a second trip up the ladder. Use the quantity selector above to see the pack and case options and the price that goes with them.
Browse the full range on our Satco lighting brand page — or search the Satco number (S6638) to come straight back here.