Building QRD 734's


Does anyone anywhere have the building plans available for the QRD 734 Diffuser in a 2'x4'x9-1/8" configuration?
I tried a google search but found nothing. I'd be more than happy to purchase the plans for this unit. I need 9 of them so I'd rather build than purchase assembled. It'll save me hundreds on shipping.

Thanks Muchly,
Shawn
128x128shawnlh