Any wooden window frame with a single glass is easy to turn into a double, having received a kind of glazing is not worse than common now brand.
This will require a brace or composite rod-the glass bead and a slightly larger format than is setup in the window so that you can lay on the frame and press with rail, bothering and seal with a rubber strip or putty.
Recommend to read
FROM MOPED — MOTORCYCLE
This machine I once (in 1998) collected from degraded and abandoned because the owners of the parts and components of various vehicles. Rama — from the Riga moped RMZ-126 "Delta". From...
GLIDERS LIDIA KOCHETKOVA
Start 30-ies was a time of rapid development of Soviet gliding. The newly constructed plant produced serial training gliders and sent them to all parts of the Soviet Union for gliding...