Sheet Metal Folding Tool: Fixed Length and Depth

Malco’s 12F, 18F, and 24F folding tools offer a sturdy solution for folding sheet metal. Each model is made with superior design and include handy sight holes to assure proper depth alignment.

The 12F is 12″ (31 cm) long with 3/8″ (9.5 mm) & 1″ (25.4 mm) depths. This tool is ideal for HVAC applications such as folds for drive cleats and big deep folds for joist panning, plenums, register boots, trunk line end caps, and more.

The 18F is 18″ (46 cm) long with 3/8″ (9.5 mm) & 1″ (25.4 mm) depths . This longer folding tool assures a more uniform fold.

The 24F is 24″ (61 cm) with 3/8″ (9.5 mm) & 1″ (25.4 mm) depths. This model may also be used as a mini-brake by roofing and siding applications.


  • Sturdy design offers a quality fold.
  • Hand sight holes for proper depth alignment.


Catalog #DescriptionFolding Depths in. (mm)Width in. (cm)Net Weight oz. (g)
18FFolding Tool - 18 in.3/8 (9.5), 1 (25.4)18 (46)31 (879)
24FFolding Tool - 24 in.3/8 (9.5), 1 (25.4)24 (61)42 (1191)
12FFolding Tool - 12 in.3/8 (9.5), 1 (25.4)12 (31)20 (425)

Capacities: in (mm)

Mild Steel 24 Gauge
.024 (0.61)



My Review for Sheet Metal Folding Tool: Fixed Length and Depth

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Jon E. Wood

Three Stars
Works fine.

Will Usher

Quick method to fold sheet metal without a full brake.
Had to do some ducting modification for a new HVAC system. I'd never done it before, but this tool made my life much, much, easier. Very simple, but sturdy and well-made. You can't really see in the picture, but it's got a thin split along both edges that allow sheet metal to be pushed inside the tool and bent against a (sturdy) flat surface to create a straight clean bend of any degree.

Ron G

Saves time and does clean work
Use this to make up custom flashings. gives you a real nice clean bend can do to sizes (depths) much nicer to work with than seamers