This basement/casement window is constructed of energy-efficient polyvinylchloride (PVC) which will not warp, peel, or corrode and will provide years of trouble-free operation and performance. This is a versatile window that can be installed as a hopper, an awning, or a casement window, and its fusion-welded frame and sash corners help prevent against water leakage. The operating system features concealed, adjustable hinges and lever handle sash locks that, combined with the unique double-contact weather strip, create a weathertight, secure window you can enjoy for years to come.