FasGroov® Knives

Safer to use with comfortable molded handles. Male and Female Shiplap Knives for 1” (25 mm) and 1-1/2” (38 mm) duct board can be used on closed duct sections. Duct Knife features a rounded scoring edge to cut fiberglass without tearing skin. Plus, Malco’s No. FG1 Hole Cutter and a special 1-1/2” (38 mm) blade No. KBHC are available separately for creating flex duct take-offs.


  • Rounded scoring edge


Catalog #DescriptionHandle ColorDuctboard Size in. (mm)
FGFFemale Shiplap KnifeGreen1 (25)
FGMMale Shiplap KnifeBlue1 (25)
FGFLFemale Shiplap KnifeRed1-1/2 (38)
FGMLMale Shiplap KnifeYellow1-1/2 (38)
FGKDuct KnifeBlack


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