
Double glazed |
1.6 |
Double glazed with 1x Low E + Argon Gas |
1.5 |
Double glazed with 2x Low E + Argon Gas |
1.4 |
Triple glazed with 2x Low E + Argon Gas |
1.2 |
Triple glazed with 2x Low E + Krypton Gas |
1.0 |
Max Sash weight of 80Kgs

