• Test 1420 cfm at 4 in.wg. (560 L/s at 1000 Pa).
  • Positive and negative pressure testing.
  • Simple analog gauges; no complicated multi-menu digital gauges.
  • Calibration certificate certified by Professional Engineer attesting to orifice plate’s 2% accuracy.
  • Swivel caster wheels to allow horizontal transport in a pickup or storage.
  • Industrial powder coated (hunter green) finish for long life.
  • Only 25 inches wide to fit through most doorways.
  • Two piece, flange tap orifice tube with interchangeable orifice plate* so you don’t have to carry more than one orifice tube around.
  • Customer choice of S304 orifice plate.
  • Optional orifice plates at additional cost: 1/2-inch, 1-inch, 2-inch, 3-inch, 4-inch, 5-inch or 6-inch ID. [12, 25, 50, 75, 100, 125 or 150 mm].  Click here to see maximum leakage you can test with each orifice plate.
  • 12.5 ft (3.8 m) of flexible duct.
  • 20 ft (6 m) of duct static pressure tubing.
  • Inlet damper and guard included with blower for varying airflow.
  • 230v, 3ph blower for the most demanding jobs. Can be wired for 460v at customer request.


  • 230v/1ph operation.
  • Custom digital gauges run on 9v battery.
  • Speed controller for precision control and low pressure or low leakage applications.
  • Additional orifice plates for wider leakage flow range.
  • Smoke machine



  • EN 1507, Ventilation for Buildings – Sheet Metal Air Ducts with Rectangular Section – Requirements for Strength and Leakage.
  • EN 12237, Ventilation for Buildings – Ductwork – Strength and Leakage of Circular Sheet Metal Ducts.
  • Eurovent 2/2, Leakage Rate in Sheet Metal Air Distribution Systems.
  • DW/143, Ductwork Leakage Testing.
  • SMACNA Air Duct Leakage Test Manual.

professional-engineer-stampStamped and Certified.
Anything Less is Rolling Dice.

Test several floors at once!
Test over 16in.wg if needed!