Source is proud to be the authorized SIW dealer for the Lowcountry and Caribbean regions. SIW manufactures the highest quality aluminum impact-resistant windows and doors. With a complete line of impact windows including casements, project-outs, rolling, single hungs, fixed and architectural windows and a focus on the intersection of durability and style, you can sleep well knowing SIW has your back. Additionally, SIW manufactures hurricane resistant decorative doors, glass garage doors and sliding doors that don’t require the use of shutters and meet the highest impact standards. SIW offers a wide variety of coatings including wood grain so no matter what your aesthetic SIW can customize windows and doors to compliment it!