4 in 1 Entrance guide and Roll Profiles
4 in 1 roll sets are typically installed on the outboard of an S and Drive machine or heavier gauge Pittsburgh. they consist of three roll profiles: Right Angle Flange (2), T connection (tap in) and Standing Seam The 4 instead of 3 indicates that the machine does both the small and large Right angle Flange for the Male Pittsburgh.
The 3 in 1 roll set includes a 1/2″ Right Angle Flange which is too large to be used as the Male Right Angle with even the “Large” female Pittsburgh. Since the reason shops invest in the 3-in-1 rollset has always been because of the Outside Tap profile.
Even though a contractor might call them or “3 in 1 rolls” because the defining characteristic of the rollset is the tiered Entrance Guide, Flagler refers to this rollset as “Tap In Rolls”. The Tap In rolls are actually a roll profile of their own—seen on this gauge as the 2nd from top tier. Tap in Rolls allow contractor to take a width of metal (say 4” wide by 12” long) and run it thru forming a profile which they then put on one edge of square duct (12” in this case) x 3 other sides. It serves as an end cap on the raw edge of duct.
If a contractor is using this primarily for the Male Pittsburgh, we recommend buying outboard Right Angle Flange rolls for a High Speed Pitts to ensure hitting the correct step guide.
The 4 in 1 rolls cannot be run on a standard 5-station rollformer; they require 7 stations and bigger diameter rolls.
4-in-1 Rolls (22-28 Gauge) run four profiles: 5/8" Tap-In, 5/8" Standing Seam, 9/16" Right Angle Flange (large Male Pittsburgh), and 1/4" Right Angle Flange (small Male Pittsburgh).