40023 | A21 ULTRA LED Grow Bulb with E26 Medium Base - 400nm-730nm, 17W, 120V

Sylvania 40023 ULTRA LED Grow Bulb allow you to grow plants indoors all year long with little to no sunlight needed. The A21 grow bulb comes with a medium E26 base fitting the standard household light socket. Works great for all stages of growth (germination, growth, reproduction, pollination, and seed spreading). The light bulb is designed to provide a wide light spectrum to encourage healthy plant growth and more yield. Low heat emissions allow for placement close to plants with no leaf burn. Damp rated for high humidity applications.

Sylvania LED Grow Lights provide a wide spectrum of blue, yellow and red light from 400nm 730 nm. This makes it perfect for Vegetation Stage (which peaks in the blue spectrum 400nm 500nm), Pre-Flower Stage (which peaks in the yellow/red spectrum 500nm-600nm which triggers photosynthesis), and Flower Ripen Stage (which peaks in 620nm 730nm).

SYLVANIA ULTRA LED grow lamp spec sheet

• Greenhouses   
• Indoor Plant Growing
  
• Residential Lighting
• Commercial Lighting
• Indoor/Outdoor
• Damp or Dry Locations

• Non-Dimming
• Full Spectrum 400nm-750nm
  
• Mercury Free & Lead Free
• Omni Directional
• Energy Efficient
• 25,000 hrs Lifespan

• 30 day Seller Warranty
• 3 year Limited MFG Warranty