4'0 x 4'0 Horizontal XO Sliding Window

4x4 New Sliding Vinyl Window 

Rough opening 47" wide x 47" tall

Frame size, not including nail fin 46.5" wide x 46.5" tall 

Double glazed, Argon filled LowE tempered glass

Tempered Glass - 4x stronger than standard glass

Fully certified - U-Factor .27 

Bug screen included