The Bostitch MIIIFN Hardwood Flooring Cleat Nailer is a mallet-actuated pneumatic flooring nailer built for installing hardwood flooring with 16 gauge T-cleats and L-cleats. This is a flooring nailer designed for fastening hardwood floor boards efficiently and consistently. Model Number: MIIIFN. If you are laying a full room, not just doing a repair, this is the kind of tool that saves time and keeps your install moving.

What matters most on the job is how quickly and consistently the tool sets each cleat. The Bostitch MIIIFN Hardwood Flooring Cleat Nailer uses high-speed pneumatic operation, so each strike of the graphite mallet drives the fastener with less effort than manual nailing. It handles 1-1/2 inch to 2 inch, 16 gauge flooring cleats and carries up to 110 fasteners in the magazine, which means fewer reloads when you are working across a large floor.

Bostitch built this hardwood flooring cleat nailer around stability and control. The extra-wide composite base plate helps the body stay square on the board while you work, which is a big deal when you want tight joints without beating up the tongue. The long reach handle gives you better leverage and a more comfortable posture than shorter designs, especially during long runs where repeated setup and strikes can wear you down.

This tool is also set up for the real details that matter in flooring work. Included 1/2 inch and 3/4 inch base plates help match the tool to common flooring thicknesses, and the pre-finished flooring adapter foot is useful when you need to reduce the chance of marking finished material. The top-load magazine speeds up reloads, so you spend less time stopped and more time setting the next course.

On the air side, this is a pneumatic nailer that connects to a compressor through a 3/8 inch fitting. It has a 70 to 90 PSI pressure range, with a maximum PSI of 90. That gives you a clear target for setup: enough pressure to drive cleanly without overdriving. Since it is air-powered, there are no batteries to charge, no charger to keep track of, and no drop in performance as the day goes on.

The 11.2 pound tool weight tells you this is a serious flooring install tool, not a light trim nailer pretending to do flooring work. That weight helps the nailer sit firmly on the board, while the long handle and wide base help offset fatigue and improve control. For installers who want a dedicated cleat nailer for strip and plank hardwood, that is the right tradeoff.

This Bostitch flooring nailer makes the most sense for flooring contractors, remodelers, and serious DIY users tackling full hardwood installations. If you need to install tongue-and-groove hardwood with 16 gauge cleats, want a mallet-actuated system, and prefer pneumatic reliability over cordless convenience, this tool fits the job well.

Why the Bostitch MIIIFN Hardwood Flooring Cleat Nailer Still Makes Sense

This is a purpose-built flooring nailer that does exactly what a hardwood installer needs: stable setup, fast pneumatic drive, and less wasted motion on every row.

• Who it's for: Flooring pros, remodelers, and serious DIY users installing tongue-and-groove hardwood with 16 gauge cleats.
• Why it stands out: The wide base, long handle, 110-fastener magazine, and included flooring setup parts make it more job-ready than stripped-down nailers.
• Worth knowing: This is a pneumatic, mallet-actuated tool, so you need a compressor and the right cleats to get to work.

• What fasteners does this nailer use? It uses 16 gauge T-cleats and L-cleats in lengths from 1-1/2 inches to 2 inches.
• Is this cordless? No. This is a pneumatic flooring nailer that runs from an air compressor.
• What air pressure should you run? It has a 70 to 90 PSI operating range, with 90 PSI maximum.
• How many fasteners fit in the magazine? The magazine capacity is 110 fasteners.