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EFCO's subframe system provides an excellent alternative to typical window installation. EFCO offers many styles and profiles of subframe which allow for erector ease of installation with varying opening tolerances and provide a method to control water for weeping to the exterior of the building. Most subframes allow for complete installation from the interior of the building, minimizing the need for costly scaffolding or staging. With EFCO's extensive library of shapes and sill extensions, we can provide a system for just about any application or we can customize a subframe system to meet your application and aesthetic needs.