Answer
Jun 05, 2025 - 11:50 AM
Yes, the Keystone KTL-F54T5-841-HO and the Philips Cool White F54T5/TL841/HO/ALTO are essentially the same type of lamp, designed to be interchangeable replacements for each other. They share the following key specifications:
- Lamp Type: T5 High Output (HO) Fluorescent
- Wattage: 54W
- Color Temperature: 4100K (Cool White)
- Nominal Length: 4 feet (approximately 46-48 inches)
- Base Type: Miniature Bi-pin (G5)
- Lumens: Both typically produce around 5000 lumens
- CRI: Both have a Color Rendering Index (CRI) of 85 or 82, indicating good color accuracy.
The "ALTO" in the Philips designation indicates their low mercury content, which is also typically a feature of modern fluorescent lamps like the Keystone model.
