A: It comes with lights, so you don’t need to buy bulbs separately.
A: Mine did not come with bulbs. It’s been quite a while but, as I recall, Home Depot sells a 4-pack of bulbs.
A: No, this is LED fixture with integrated LED's. https://images.thdstatic.com/catalog/pdfImages/85/854be8b9-616a-444b-be1c-da783aff9e28.pdf
A: Please review Installation Guide: https://images.thdstatic.com/catalog/pdfImages/44/44a9b6f1-bb19-4571-9d58-0931fcd3aae0.pdf
A: part# DLBL48 - replacement lens for Model #LBL4
A: To determine how many fixtures do you need I will need to know Length [X], Width [Y] and Height [Z] of your garage. For regular 2 car garage I would suggest 2 fixtures.