115 to 30 Adjustment: Solar panel mounting bracket can be adjusted for 15 to 30, you can use the bracket as your actual situation. 2Anodized Oxidation Processing: This solar panel mounting stand is with anodized oxidation processing, and has high strength and with corrosion resisting. 3Function Description: The stand helps solar panels get the most sunlight to generate more power. Up to 20% more in low sunlight conditions. 4Aluminum Alloy and Stainless Steel: Our solar panel mounting stand is made of aluminum alloy and the fasteners are made of stainless steel with exquisite workmanship. 5Suitable Scenario: Our solar panel mounting stand is suitable for roof, balcony, ground, communication base station, etc. And suitable for off grid PV system.