< span style="font-size: 12pt;">是一组结构构件，固定在一个粗糙的开口上，以容纳门窗。木框架包含了开口的所有元素，包括装饰填充物，如玻璃窗框。For both interior and exterior doors, the frame is recessed to accept hinges and a strike plate, where fasteners or deadbolts extend into the frame for security. Wood material is not a good conductor of heat, a fact which allows for energy efficiency in exterior doors and windows. Structural members may include a head jamb, sill, mull and side jambs, depending on the type of opening. Factory-built frames are available with prefinished, unfinished, or primed surfaces; factory-built window frames may also integrate aluminum or vinyl cladding.