6" LED Fire Rated Disk Light, 1000 Lumens, 8W, CCT Selectable, 120V Product Type_Outdoor Ceiling Lights How do I figure out

How do I figure out how many of these I need and what spacing to use

Advanced optical lens design delivers 360° beam spread with zero hot-spotting

The charger fully restores the battery within 24 hours

HBLED210-4FT

Rated for wet locations and DarkSky approved to minimize light pollution

6" LED Fire Rated Disk Light, 1000 Lumens, 8W, CCT Selectable, 120V Product Type_Outdoor Ceiling Lights How do I figure outOur Fire Rated Ultra Slim LED Disk Lights combine a sleek, low profile design with a durable die cast aluminum construction. These Energy Star certified fixtures are available in 4, 6, and 8 round shapes to suit various installation needs. Users can easily customize their ambiance using the 5 CCT selectable switch, offering color temperatures from 2700K to 5000K. With a CRI of 90 and a dimmable output up to 1,500 lumens, they provide high quality,