Elevated Temperature Laboratory

Pottorff's committment to accurate and credible performance data is highlighted by our state-of-the-art elevated temperature test lab. Features include:

  • 500 degree fpm maximum velocity
  • 5000 F maximum temperature
  • 20 in. wg. maximum static pressure
  • UL-555 and UL-555S compliance testing
  • AMCA 500D performance testing

The lab features a 4375 cu.ft. chamber
with 25 nozzles, 8 settling screens and
a 35 million BTU burner. The system
has two fans capable of generating
up to 90,000 CFM. All equipment has
been designed per AMCA 500D and is
currently in the process of getting UL
and AMCA certification. This lab allows Pottorff to
streamline product development efforts, as well as
enhance current product offerings.

Wind-Driven Rain and Water Penetration Laboratory

The Wind-Driven rain test rates the ability of a louver to protect openings behind it from water directed at the louver of speeds up to 50 mph. The Water Penetration test rates the ability of a louver to protect openings behind it from water that cascades down a wall or falls vertically in front of it. Our setup will test louvers per AMCA 500 and 511 with eventual approval for the AMCA CRP program.

The wind-driven rain and water penetration lab
features a 48" vane axial tubular fan providing
55,000 CFM. In front of the outlet is
a system of nozzles which are
programmed to sequence the pattern
of spray. In front of this is a ventilation
chamber with ductwork running to an
exhaust fan featuring an airflow
nozzle to measure ventilation airflow.

Acoustical Testing Laboratory

Our NVLAP accredited Acoustical Testing Laboratory (Lab Code 201006-0) delivers exacting and repeatable measurements from 25 to 29,000 Hz using ASTM E477-13.


The heart of this laboratory is the 31,500 ft3
reverberation chamber. With no two surfaces
parallel, this 567,000 lb. chamber
floats on 212 spring isolators and
boasts an impressive 7.74 seconds of
reverberant decay. Vitally important to
accuracy in the lower frequencies is
the special average generated by the
15.6 ft. diameter sweep of the
microphone. The unique dimensions
ensure sufficient modal density, even
in the 31.5 Hz octave band, and when
coupled with the enormous reach of the microphone
boom, guarantees accuracy/repeatability of test data.

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