Crystal’s MAGNUS Series windows are water resistant and approved for Florida Hurricane Zones. The 4500 Series features a choice of either 2-⅜ inch or 3-¼ inch frame depths, multi-point locks, sash perimeter compression seals, and top quality hardware. The frame’s insulating multi-chambers are suitable for optional reinforcement, an important feature for large size or heavy commercial rated windows. The MAGNUS Series 4500 accommodates insulated glass units up to 1-⅜ inch and offers U-values as low as 0.20. The uPVC material’s High-Definition Finish outperforms standard vinyl to assure years of unparalleled service with minimal maintenance and it is available in three extruded colors, white, beige, and clay. To facilitate new construction and retrofit installations in a variety of building types, optional nail fins and other accessories are available.