Description
Product Summary
The Malco FGL3RB is the factory replacement blade for the Malco FasGroov FGL3 #3 Left Hand Shiplap tool, used to cut the left-hand shiplap groove used when joining duct board panels in 1-1/2-inch fiberglass duct board. Swapping in a fresh blade brings back clean, consistent grooves and keeps the tool cutting without tearing the board facing.
FasGroov tools come in two sizes: the "FGV" line for 1-inch board and the "FGL" line for 1-1/2-inch board. This blade is made for the FGL3 only, so match the blade to the tool number and board thickness you run.
Key Features
- Exact fit for the FGL3: Malco OEM replacement for the FasGroov #3 Left Hand Shiplap tool.
- Sized for 1-1/2" board: cuts the correct groove depth for 1-1/2-inch fiberglass duct board.
- Restores clean cuts: a sharp blade reduces facing tears and ragged grooves.
- Quick swap: replaces the worn blade so the tool body stays in service.
Frequently Asked Questions
Which tool does the FGL3RB fit?
Only the Malco FasGroov FGL3 #3 Left Hand Shiplap tool for 1-1/2" duct board.
Will it work on 1-inch board?
No. For 1-inch board, use the matching FGV tool and its FGV blade.
When should I replace the blade?
Replace it when grooves start tearing the facing, the cut depth becomes uneven, or the tool takes noticeably more force to push.
