Satco 40W Frosted Medium A15 Incandescent Appliance Light Bulb (S3721)
The Satco 40W Frosted Medium A15 Incandescent Appliance Light Bulb (S3721) by Satco is a Incandescent Special Purpose Light Bulb product. Available for delivery and in-store pickup at Family Hardware in Cape Coral and Fort Myers, FL.
Cape Coral: 2 available · Fort Myers: 4 available
Local Delivery available — flat $7.50 within 10 miles. Order by 2 PM for same-day delivery — choose it in your cart.
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A15 incandescent appliance light bulb with medium base. Ideal for use in refrigerators, freezers, and a variety of other applications around the home. Approved for use in ovens.
Satco item S3721 · UPC 045923037214
This is Satco S3721, a T7 / T6.5 / bayonet lamp on a Medium screw (E26) 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 S3721 and you get the same lamp.
Appliance and indicator bulbs: what T7 / T6.5 / bayonet means
Small tubular bulbs built for heat and vibration inside appliances. Many use a double-contact bayonet (BA15d) base rather than a screw base, so the base type matters more than the wattage when matching a replacement.
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Base: Medium screw (E26)
Medium screw (E26) is the standard household screw base. 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
- Refrigerators, freezers and range hoods
- Microwave and oven cavities
- Sewing machines and indicator panels
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 (S3721) to come straight back here.