There are 2 names in this directory beginning with the letter N.
Nailing Hem (or Flange)
The section of siding or accessories where the nailing slots are located.
National Fenestration Rating Council.
David K. of North Potomac, M
I had all my 18 windows replaced over the last summer. I evaluated two contractors and both gave excellent sales presentations and the prices were competitive. I decided to use Crystal Exteriors because I felt the owner of Crystal Exteriors, Edgar Li, was very professional and willing to work with me, in terms of pricing and other issues. The work was done in a professional manner. After the windows were replaced, Edgar himself stopped by few times to make sure that the windows were satisfactory.”
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