This is Zola’s aluminum clad wood frame w/triple glazing. Similar to their best window, but without the insulation layer in the laminated frame.

This is Zola’s aluminum clad wood frame w/triple glazing. Similar to their best window, but without the insulation layer in the laminated frame.

This unclad Zola wood frame w/triple glaze still includes an aluminum drip at the sill side of the frame. Nice detail.

This unclad Zola wood frame w/triple glaze still includes an aluminum drip at the sill side of the frame. Nice detail.

Zola’s PVC triple glaze frame. 
In the US triple glaze seems to be widely available in cheap PVC frames, yet absent from high quality aluminum clad wood frames. What’s with that? In any case it seems less sensible to go all the way to a EU manufacturer for a triple glaze PVC frame. 

Zola’s PVC triple glaze frame. 

In the US triple glaze seems to be widely available in cheap PVC frames, yet absent from high quality aluminum clad wood frames. What’s with that? In any case it seems less sensible to go all the way to a EU manufacturer for a triple glaze PVC frame. 

Zola - another European window maker marketing triple glazed units to the US. This is a aluminum clad wood frame, with a laminated wood sash. The laminates include a synthetic layer they call “Purenit™” which acts as a thermal break -  the light layer in the photo above.
Company says they are in Colorado, manufactured in Europe - not sure where. They have several different frame lines, including a PVC line.
(via About Zola Passive House WindowsZola European Windows)

Zola - another European window maker marketing triple glazed units to the US. This is a aluminum clad wood frame, with a laminated wood sash. The laminates include a synthetic layer they call “Purenit™” which acts as a thermal break -  the light layer in the photo above.

Company says they are in Colorado, manufactured in Europe - not sure where. They have several different frame lines, including a PVC line.

(via About Zola Passive House WindowsZola European Windows)

Not entirely sure, but I think I am looking at a wood (teak?) window with a brass clad sill.
Amazing.
IMG_2214.jpg (by Peter Guthrie)

Not entirely sure, but I think I am looking at a wood (teak?) window with a brass clad sill.

Amazing.

IMG_2214.jpg (by Peter Guthrie)

Another frame from Internom. Aluminum clad PVC - an interesting combo not seen in the US.

Another frame from Internom. Aluminum clad PVC - an interesting combo not seen in the US.

Another EU window maker with triple glazed in an aluminum clad wood frame - insulation filled AL in this case. 
Internom

Another EU window maker with triple glazed in an aluminum clad wood frame - insulation filled AL in this case. 

Internom

another image of the Pazen window frame

another image of the Pazen window frame

(via Pazen Fenstertechnik ENERsign Fenster)
European window with wood interior, and foam exterior clad in extruded fiberglass, going to lengths to make a low profile frame.

(via Pazen Fenstertechnik ENERsign Fenster)

European window with wood interior, and foam exterior clad in extruded fiberglass, going to lengths to make a low profile frame.

Best performing windows? Spruce Fir interior. Cork thermal break. Larch Exterior. Aluminum Cladding optional. German origin, passive house certified, sustainable materials. 
Impressive. But how about a window that cost half as much, and did 90% of the energy performance. A window that anybody could have in their house.
Optiwin Windows | Our Products

Best performing windows? Spruce Fir interior. Cork thermal break. Larch Exterior. Aluminum Cladding optional. German origin, passive house certified, sustainable materials. 

Impressive. But how about a window that cost half as much, and did 90% of the energy performance. A window that anybody could have in their house.

Optiwin Windows | Our Products