Blower Door Retrotec for Duct air tightness testing

EU450X-E DucTester System

Brand: Retrotec
Product Code: EU450X-E

European Commercial DuctTester EU450X-E

9 kg Commercial Duct Tester is a Game Changer

The 450x includes even more improvements from the former Model 400. Mount your DM32X WiFi Gauge directly onto the shell for easy accessibility. A new foot design allows for a secure, sturdy base.

Test to 250, 1000 or even 5000 Pa! Sufficient flow for almost every test. 600 square meters of duct or more can be tested.

Change the test direction by moving the 100 mm flex from the outlet to the inlet adapter which snaps on in one second. No clumsy flanges to disassemble.

Results in any desirable unit such as cubic meters per second per square feet is read directly off the gauge. Or, use the test to complete and automated test then have the software generate an EN12237, FE E51-767 or DW/143 compliant report that can be easily customized with your format, logos and even pictures of the test. Users love the set up and test speed.

One tech can take this tester to the jobsite by taxi or train. An industry first as is the ISO 17025 accredited calibration.

Who uses it?

  • Energy Auditors, HVAC Contractors, Building Contractors & Remodelers, Home Inspectors

Fan Model #: 400

Flow Into Back Pressure of:




Maximum Flow at 120 or 230 VAC: 

1 in WC (250 Pa)





4 in WC (1000 Pa)





8 in WC (2000 Pa)




Minimum Flow with std Range 18:

1 in WC (250 Pa)




Minimum Flow (with opt Range 3):





14" × 14" × 26" (35 x 35 x 66 cm)

Weight of System:

21 lb (9.5 kg)

Flow Accuracy:


Power input:

120 V AC, 15.5 A, 50/60 Hz, 1 phase or 
240 V AC, 8.5 A, 50/60 Hz 1 phase

Recommended Fan Calibration Interval:

5 years


Digital Gauge Model:

DM32X 20

Special Features:

This special gauge DM32X WiFi for the DucTester 400 has a 20 in. WC (5000 Pa) sensor.

Link to Specifications:

Click here to see the full specs for the DM32X

* The max flow of the fan will vary depending on the following factors:
      barometric pressure, back pressure, blade pitch, air temperature, bearing tightness, inlet air turbulence, length of flex duct