Malco 12F 12" Folding Tool for HVAC – 3/8" & 1" Depths, 24–30 Gauge, Sight Holes

This compact, jobsite-ready folder is engineered specifically for ductwork tasks — from forming drive cleats to deeper folds for joist panning, plenums and register boots. Its two permanent steel halves produce rigid, wobble-free seams and accommodate the most common HVAC sheet metal thicknesses, so you get consistent results without swapping tools or wasting time measuring every bend.

How does the Malco 12F deliver repeatable folds on the job?

The 12F combines a fixed, two-groove profile and visual alignment points so each bend seats the metal at the correct depth before you fold. That reduces rework and speeds layout when you’re cutting, notching, and locking seams on repetitive pieces.

• Dual grooves for 3/8" and 1" fold depths to match common HVAC requirements
• Sight holes that show when the sheet is properly seated
• Rigid two-steel-half construction to prevent flex during repeated bends
• 12" length balances reach and portability in confined spaces

What materials and thicknesses can this folder handle?

The tool is sized and finished to work smoothly with typical HVAC stock. It’s optimized for 24–30 gauge sheet metal, the range most installers and tin knockers encounter for drive cleats, small plenums, boot flanges and joist pans.

• Designed for 24–30 gauge galvanized and similar HVAC metals
• 3/8" groove for shallow cleats and lock seams
• 1" groove for deeper flanges like joist panning and trunk-end caps
• 20 oz. weight makes it easy to hold and maneuver overhead or in tight spaces

Why is the build quality important for professional results?

Durability and rigidity keep folds accurate over hundreds of bends. The 12F’s two permanently joined steel halves resist distortion, so alignment and depth stay consistent even after repeated use on the jobsite.

• Permanently joined steel halves eliminate wobble and maintain straightness
• Robust construction suited for daily professional use
• Made in the USA to trade-focused quality standards
• Low mass and compact size reduce fatigue during long shifts

How does this tool fit into common HVAC workflows?

Use it as a go-to folder for repetitive bends and small assemblies where accuracy matters. The quick depth selection and sight-hole checks let you move from layout to forming without additional fixtures or measuring on each piece.

• Form drive cleats, register boots, plenums and joist panning efficiently
• Eliminates frequent tool changes with two depth options in one unit
• Portable 12" length fits inside trucks, carts, and tight duct spaces
• Compatible with common shop and field workflows for faster throughput

Who is this for: The Malco 12F is aimed at HVAC contractors, tin smiths, sheet metal apprentices, and roofing or mechanical tradespeople who need a dependable, portable folder for everyday ductwork and light fabrication. If you routinely form drive cleats, boot flanges, or joist panning in 24–30 gauge material and value speed plus consistent results, the 12F is built to be an essential part of your toolset.