Specifications include, but are not limited to: Spiral gauges 3”- 13” 24 Ga 14” – 20” 22 Ga 20” - 32” 20 Ga Elbow and lateral gauges 3”-10” 20 Ga galvanized 11” – 22” 18 Ga galvanized 24” – 32” 14 Ga galvanized Square to rounds – 14 Ga galvanized Rectangular ductwork – 12 Ga galvanized All elbows and spiral under 18” to be slip fit and tek screwed. Seams to be taped with foil tape. All elbows and spiral 18” and over to be flanged. All flanges to be caulked. Flanges field installed to be stitch welded to the spiral. Seams to be caulked between stitches Flanges to be cold galvanized after install All flanged elbows and laterals to be Vanstone flanged All laterals to come off at 45 degrees Pipe and elbows to be supported accordingly both vertically and laterally to keep pipe from moving. Pipe to be supported accordingly as close to every 10 feet horizontally. Proper vertical support is needed on vertical main lines. Bell mouths to be used to connect spiral to legs, hoppers, and indents All lines to have a blast gate in them. All elbows to be minimum 5 gored elbows All elbows to be 1.5 centerline radius unless otherwise specified 6” x 30’ screw conveyor 6” U trough conveyor Wood hanger bearings 1 HP TEFC motor Dodge screw conveyor drive Belt drive for final 60 rpm