3. Strong compatibility, height adjustable, different specifications of photovoltaic modules can be applied, while compatible with the different arrangements of photovoltaic modules, can achieve random interchange. Features: 1. High quality stainless steel hanger bolts for solar PV system installation. 2. Light weight, good strength, high resistance, can be applied to very harsh installation environment. 4. Safe and reliable, the structure fully takes into account the factors of load bearing, wind resistance and earthquake resistance, and undergoes calculation and testing to safety and reliability., Weight: 1.71519639836 pounds, Manufacturer: tiyao