Malco DTSQ Duct Board Square – Foldable 90° Layout Square for HVAC Duct Board Fabrication, Adjustable Thickness Scale, Fits 1" & 1.5" Board, Lightweight Aluminum, Pairs with Malco Duct Board Tools

Malco DTSQ

•LOCKS INTO 90° FOR INSTANT, RELIABLE DUCT BOARD LAYOUT - NO GUESSING, NO DRIFT: The DTSQ snaps securely into a fixed 90° open position so your square stays true through every mark and cut; no shifting, no re-checking, no wasted material from a square that moves mid-layout. When the job is done, it folds flat for compact storage in your tool bag or van without taking up a dedicated slot.
•INTEGRATED ADJUSTABLE THICKNESS SCALE MATCHES YOUR MALCO CUTTING TOOL SIZE: The DTSQ's built-in adjustable material thickness scale is calibrated to align directly with Malco's three duct board cutting tool sizes so your layout marks account for material thickness automatically, without a separate calculation or measurement step. The result is cleaner cuts, tighter joints, and less scrap on every job.
•RIGID LIGHTWEIGHT ALUMINUM CONSTRUCTION BUILT FOR JOBSITE CONDITIONS: The DTSQ is machined from rigid aluminum that holds its shape and stays square under the daily wear of HVAC fabrication work; on the shop bench, in the back of a van, or on a commercial job site. Lightweight enough to carry all day without fatigue. Durable enough to outlast plastic alternatives that flex and lose accuracy over time.
•WORKS WITH 1-INCH, 1.5-INCH, AND 2-INCH DUCT BOARD - COVERS COMMON MATERIAL THICKNESSES: The DTSQ's adjustable thickness scale accommodates 1-inch 1.5-inch and 2-inch duct board, making it the only layout square you need regardless of which material thickness your job specifies. Switch between thicknesses with a quick scale adjustment; no second tool, no re-measuring from scratch.
•PURPOSE-BUILT TO PAIR WITH MALCO'S DUCT BOARD CUTTING TOOLS: Designed from the ground up to work alongside Malco's v-cut and straight-cut duct board cutting tools, the DTSQ eliminates the setup time and layout errors that come with using a general-purpose square on a specialized task. Whether you're fabricating in the shop or cutting on-site, the DTSQ keeps your measurements consistent and your cuts clean from the first panel to the last.

Malco DTSQ

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.