Aluminum Windows Selection GuideKey: Most Popular Applications Commonly Used Applications(click dot to go to product)Download PDF VersionExisting Window TypeExterior UseInterior UseNotesHOLHOL-OPHOL-TORAOLMAOLMOLMOL- STMOL- OPMMOLSAWAluminum WindowsFixed Casement (Single-Swing Out) Double Casement (Both-Swing Out) Projected (Push-Out) Hopper (Tilt-In) Hopper vent must clear stopsVertical Pivot (Swings in and out) Must be removedCurtainwall SpecIal Aluminum Window ConsiderationsSpecial Shapes Bowed Screens Protective Glazing Very Large Units Various models can be mulled Between-Window Blinds