Foldable 90 deg HVAC Duct Board, Adjustable Thickness, Fits 1" and 1.5" Board, Lightweight Aluminum

The Malco Duct Board Square is purpose-built to help HVAC professionals measure, mark, and cut duct board with precision and confidence. Designed to work seamlessly with Malco duct board cutting tools, this layout square simplifies setup and improves consistency-so you can move faster without sacrificing accuracy. The DTSQ locks securely into a 90° open position for quick, reliable layout. When the job is done, it folds closed for compact storage in your bag or van. An integrated adjustable material thickness scale aligns with Malco’s three duct board cutting tool sizes, making it easy to match layout marks to your material thickness for clean, professional cuts. Constructed from rigid, lightweight aluminum, the DTSQ withstands jobsite conditions without adding unnecessary weight to your kit. Whether you're fabricating in the shop or cutting on-site, this tool helps reduce guesswork and improve efficiency, keeping your installations clean and consistent from start to finish. Built for the trades. Designed for real HVAC performance.