Incandescent lamps are the original lighting technology that has remained virtually unchanged since their invention in the mid-19th century. This is the technology most everyone has become familiar with, and it is the baseline comparison for all other lighting technologies. Rough service type "A" lamps are the most familiar incandescent lamp shape designed to withstand rougher vibrations compared to standard incandescent lamps.

• Shape: A19
• Base: Medium (E26)
• Voltage: 130V
• General service Household or Commercial use
• Features a coiled tungsten filament with supports designed to withstand rough vibrations

Note: When using 130V lamps on a 120V line, life is extended approximately 2.5 times and lumens are reduced approximately 20%