Doors - Aluminium Double Glazed Bi Fold Doors

Bi Fold Doors Double Glazed Clear Glass 3 door Bi-fold, White Colour. Glass 5mm+9A+5mm, Argon gas in the gap, U-value (rate of heat conduction) 1.9W/m2•KFrom, 4. R-value (heat loss) 0.48 .