● triple-insulated threshold eliminates the risk of “cold areas” within the basement zone
● thermilosed frames and wings with a depth of 3 1/4in
● record-low thermal transmittance coefficient Uw = 0.65 W/(m2K)
● maximum construction size: 225 x 110in
● 1/64 in thin seal
● SwisSpacer warm frame
● slim design and maximum sash sizing guarantee comfort and optimal light accessa wide range of products