How bright (lumens) are the ceiling lights?

LM030588-1 (4-in Square) + LM030591-1 (5-in Round) = 600 lumens.

LM030589-1 (6-in Square) = 900 lumens.

LM030590-1 + LM030593-1 (9-in Square and Round) = 1200 lumens.