How far to put orchids from grow lights

[mizutsune]

We get very few sunny days where I live, so I decided to try grow lights. I haven't used them before and admittedly should've done more research first, but this is what I purchased: https://www.amazon.com/dp/B09Z1X26S8

I got it set up and the lights seem very bright. I'm worried about them burning my orchids. Not sure if I'm overreacting.

I'm wondering what distance I should put my orchids from the lights? I currently have phalaenopsis, cattleya, oncidium, and neofinetia falcata orchids.

Thanks!