Master Flow Manually Adjustable Thermostat for Power Vent-PT6 - The Home Depot
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Master Flow

Model # PT6

Internet # 100098472

Store SKU # 144967

Manually Adjustable Thermostat for Power Vent

Master Flow Manually Adjustable Thermostat for Power Vent

This item has been discontinued.
The Home Depot no longer carries this specific product.

$26.50 / each
  • Adjustable Power Thermostat
  • Suitable for all Master Flow Brand Single-Speed Power Vents
  • Pre-wired for installation


Model # PT6

Internet # 100098472

Store SKU # 144967

Compatible with all single speed Master Flow power vents and fully adjustable for all climate conditions. Activated by temperature, helping power vents reduce damaging moisture. UL Listed and wired for easy installation.

  • Compatible with all single speed Master Flow and LL Building Products power vents
  • Thermostat temperature ranges can be manually set from 60 degrees to 120 degrees
  • Helps power ventilator reduce damaging attic heat & moisture
  • Adjustable thermostat powers your fan on/off automatically
  • Wired for easy installation
  • UL listed

Info & Guides

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Assembled Depth (in.) 
1.75 in 
Assembled Height (in.) 
4 in 
Assembled Width (in.) 
3.5 in 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Amperage (amps) 
Color/Finish Family 
Galvanized Steel 
Product Weight (lb.) 
1 lb 
Warranty / Certifications
Manufacturer Warranty 
1-year Limited Warranty 


Rated 4.6 out of 5 by 19 reviewers.
Rated 5.0 out of 5.0 very satisfied Had to buy a new one when the one on the attic fan did not work that I had bought online April 28, 2015
Rated 3.0 out of 5.0 by Does the job, but has accuracy issues. Thermostat is a basic bimetal, that make/break contacts based on temperature. The instructions may not be great but I found installation self explanatory. There are 2 wires to the thermostat that make/break the connection to the load. The motor's neutral goes straight to the power neutral, both wires are white in most cases. Ground goes to the green grounding screw. The thermostat wires hook up like an ordinary light switch. The thermostat works but I found mine to be 10-15 degrees off. With a 110 setting the thermostat kicks the fan on @ 120-125. Measure actual attic temperature and set thermostat accordingly. Temperature "spread" doesn't seem to be quite enough as the fan cycles on/off after the sun goes down. I'd rather see the thermostat have a larger "spread" between on and off, perhaps 10 to 20 degrees. July 24, 2011
Rated 4.0 out of 5.0 by does what it suppose to We bought it to make a outlet with it. Cuts any 120 AC fan on. September 30, 2014
Rated 5.0 out of 5.0 by Adj.power thermostat This thermostat fits a wide range of products. It can be sit up for even box fans and very easy to install. July 11, 2009
Rated 4.0 out of 5.0 by Easy to Install but Enclosed Instructions Weak I determined that my attic fan worked without the thermostat switch and then determined that the old switch wouldn't connect no matter what the temperature setting. I took the old thermostat into Home Depot and the associate took me to the replacement parts. I was disappointed in the instructions enclosed with the part. There were written instructions but no illustration. The wiring diagram on the thermostat was not sufficiently detailed. Fortunately, I was able to go to Master Flow's website and download the instructions for the whole fan. That had a diagram that immediately answered my questions and revealed that the previous thermostat had been installed not quite properly (not by me). Fan works great now! Worst part was the 105 degree heat in the attic! June 15, 2010
Rated 5.0 out of 5.0 by Master Flow themostat can be installed with metal blank-out plate for finished look. This thermostat is the perfect solution if you wish to install a roof or attic fan. It has a wide temperature range, which gives you a wide choice of when you want the fan to operate. I recently installed it in conjunction with a Panasonic roof-mounted exhaust fan to reduce the heat build-up in a cathedral ceiling apartment. My electrician modified a metal "midway" blank-out plate to make a "finished" installation because it does not fit in a standard electric box. January 28, 2014
Rated 5.0 out of 5.0 by 5+ years on duty! It came with the Master Flow PG2 attic fan I got 5 years ago. I bought a second for a different fan. Easy to install. Accurate and dependable. June 2, 2012
Rated 5.0 out of 5.0 by Easy replacement for existing T-stat This was just a replacement T-stat switch for one the stopped working. Two screws, a couple of wire nuts and the job was done. Great fit for an easy replacement. August 12, 2014
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