: Traditional vertical sliding windows; double-hung allow both sashes to move for better ventilation. 0.5.25 , 0.5.33
: Horizontal windows that slide along a track, ideal for modern or ranch-style homes. 0.5.22 , 0.5.33
: Known for being up to 8 times stronger than vinyl, preventing expansion and contraction for better long-term seals. 0.5.35