A15 appliance lamps at 40W and 320 lumens in clear and frosted glass on an E26 medium base.
Appliance-rated means the lamp is built to survive the temperature swing and vibration inside an oven, refrigerator or range hood, where a standard A19 fails quickly and does not physically fit. Rating and envelope size are both stated.
A genuine necessity line — an appliance without a working lamp brings the customer back the same week. Larger standard shapes are in incandescent A19, and the tubular appliance equivalents in T series.
