How to compare LED fixtures
This is the most common question that often lacks the most explanation. First, when comparing products look at how the product is made – is it bent sheet metal with a glass cover (inexpensive) or is it a die cast aluminum molding.
The last step is to compare the efficacy or efficiency. This is done by taking the lumens and dividing it by the wattage of the product. The LED Fixture which has a higher efficacy is the one which will give you more light for the least amount of energy used.