I checked the instructions on the manufacturer's website, it says this crap can be fitted to ceilings in increments of 2/12 to 12/12 (where 12/12 means 45Λ). My angle is 40Λ or 10/12 increments. I bought some lights that I installed under the stairs "upstairs" to light up the stairs to the basement. Due to the factory junk corner and the impossibility of adjusting it, the light hit my face and blinded me. It's not that cool to go blindly down the stairs. I don't know how the monkeys who designed this static thing allowed their advertising team to list it as suitable for almost any presentation.
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