Ventilated Roll-Up Door

So a while back I posted the top hung sliding door for my new roofed over breezeway. For the large front door I decided to go with a novel ventilated roll-up door. Novel in that I have not seen a similar construction before. My main concern was maintaining good cross ventilation down to floor level for such things as welding, metal melting and forging in addition weather protection from wind driven rain, drifting snow,and to a lessor degree security.

First picture is the roll-up drum.

Attachment 19927

The welded brackets and hardware.

Attachment 19928

The brackets and drive unit installed.

Attachment 19929

The counterweight assembly.

Attachment 19930

View from outside.

Attachment 19931

Inside view.

Attachment 19932

Inside view, door 3/4 open.

Attachment 19933

The project was not without it's snags but now done it works like a dream.

those vented roll up doors are popular in Europe and very popular as window shutters

Nothing new under the sun Frank. I'm not as well traveled as you, but those Europeans do occasionally get a good idea. :):)