Patch Plate Sizing for Duct Modifications

Minimum overlap required for this patch plate? What screw spacing?

I'm checking patch plate sizing for duct modifications at [location]. I found piece of sheet metal covering hole or cutout in duct section. Minimum overlap required for this patch plate? What screw spacing?

Cutting, Holes, Penetrations & Field Fab 2nd Year YELLOW

Stop if

Hold point on patch plate sizing for duct modifications: I have the location, photo, drawing/detail, and what I checked. Who should verify before this gets cut, drilled, covered, lifted, connected, or signed off?

Watch out

Don't use patch smaller than opening. Don't rely on tape or mastic alone. Don't skip screws at corners and edges.

Check

room/grid/area
photo of condition
drawing/detail or submittal
what I already checked
what is blocking progress

Say this to your foreman

14114 patch plate sizing for duct modifications field mods, fittings, offsets & transitions yellow 2 minimum overlap required for this patch plate? what screw spacing? i'm checking patch plate sizing for duct modifications at [location]. i found piece of sheet metal covering hole or cutout in duct section. minimum overlap required for this patch plate? what screw spacing? patch plate duct, duct patch size, cover plate hvac patch plate, cover plate, closure plate, field modification plate cover plate, patch piece, metal patch, duct cover

More in Cutting, Holes, Penetrations & Field Fab