The quality engineered construction of Berkshire Classic premium vinyl siding sets it apart in many ways. Featuring a heavy-duty .044" panel thickness, this robust siding boasts a rolled nail hem and deep 5/8" butt height for dependable strength and rigidity. A grip-tight PowerLok System firmly secures each panel in place for outstanding structural integrity and wind resistance. Together, these design enhancements deliver exceptionally straight, smooth walls that are durable and resilient to the elements.