Master Flow 1250 CFM Power Roof Mount Vent in Weatherwood-PR2DWW - The Home Depot

Master Flow

Model # PR2DWW

Internet # 100073735

Store SKU # 108877

1250 CFM Power Roof Mount Vent in Weatherwood

Master Flow 1250 CFM Power Roof Mount Vent in Weatherwood

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

$84.60 / each
  • 5 Year Parts Limited Warranty; 3 Year Labor Limited Warranty
  • Adjustable thermostat included
  • Effectively ventilates up to 2400 sq. ft. of attic space


Model # PR2DWW

Internet # 100073735

Store SKU # 108877

Store SO SKU # 813317

The Master Flow Pro2 Power Roof Vent is a great overall investment in attic ventilation. This Roof Vent removes the greatest volume of hot and/or humid air from your attic, compared to our other models, saving you more in heating and cooling costs. Available in Weathered Wood.

  • Helps reduce energy costs and helps prolong the life of the roof and shingles
  • Excellent for roof slopes 3:12-12:12
  • Large pre-punched flashing for easier installation and less chance of leaks
  • Blows hot air outside and cools the attic
  • Galvanized steel construction for durability
  • Heavy duty metal screen deters animals, birds, and insects
  • Miami-Dade County Approved and Texas Department of Insurance Listed
  • Optional Humidistat Available (H1) - Sold Separately

Info & Guides

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Assembled Depth (in.)  10.25 in  Assembled Height (in.)  30.25 in 
Assembled Width (in.)  30 in  Cut-Out Diameter (in.)  15 
Product Depth (in.)  10  Product Height (in.)  30 
Product Width (in.)  30 
Airflow (CFM)  1250  Amperage (amps)  1.65 
Color Family  Slate  Color/Finish Family  Smoke 
Material  Galvanized Steel  Power Type  Motor 
Product Weight (lb.)  23.7 lb  Reccommended Sq. Ft.  2400 
Returnable  90-Day  Ventilation Type  Roof 
Voltage (volts)  120  Wildlife Guard  Yes 
Warranty / Certifications
Manufacturer Warranty  5-year Parts Limited Warranty 2-year Labor Limited Warranty 


Rated 4.5 out of 5 by 34 reviewers.
Rated 5.0 out of 5.0 by This Fan Rocks! This was a piece of cake to install. I removed an old heat vent from the roof and cut the existing hole with a jigsaw about 1.5 inches larger. I slid the unit under the shingles, nailed it down and used plastic roof cement as instructed. The electrical hook up was easy as I tied into an existing circuit found in the attic and tied into it using 20 amp wire, staples and a new j-box with switch. This fan has cut my run time on my 5T unit by 25%. I set the t-stat @ 80deg for now as I want the attic to cool at least this low. I'll re-adjust to 95 in July sometime. Great product, low electrical usage and BIG savings on my HVAC usage. June 10, 2014
Rated 4.0 out of 5.0 by A good value roof mounted power vent Like all of us, after reading reviews I decided to install this unit in our attic. We're located in Kansas, and our summers aren't like the south, but we do have hot and humid days. The local HD had 3 of these units in stock. Upon opening, the unit was in good shape, no damage. It appears to be a well made fan assembly. I did notice that the "varmint" screen was pulled taught and there was about a 1/4 " gap in some spots. That was quickly remedied with some silicone. The instructions were 1 page with 7 steps. Enough info to do the job for most DIY folks. The container had a 15" diameter template for aiding in cutting your access hole. It took me about 3 hours total to install. I had some sealing membrane leftover from a skylight install, so I used it to seal up the flashing under the surrounding shingles. The color of the cap matches our shingles perfectly. I would have been ok with plain steel or black, but "Weatherwood" is a great color. In addition to the sealing membrane, I also used pure clear silicone to seal everything. You can opt for roofing tar, but if you're not careful it can get away from you and end up in places you didn't want. The thermostat hasn't changed much over the years. Easy hook up to your incoming power. You will probably need to purchase a wire clamp for the thermostat box to be in compliance. That will prevent the wiring from rubbing on the sides of the bare hole. The fan runs fairly quiet. And it does pull more than enough air out of our attic. It comes with a 5 year limited warranty on parts, and an additional 3 year "labor" warranty to have someone remove the fan and reinstall it. Not bad. All in all, I believe this fan is a good value for the current purchase price ($85.50). November 9, 2014
Rated 5.0 out of 5.0 by So far, So good Just took the fan out of the box for some preliminary testing. Here are my thoughts so far: Well built unit, heavy gauge steel for dome and "duct". Assembled with bolts, not sheet metal screws. Dome supports heavy duty. Fan blade is "3 wing" type with the blades riveted to the hub. Much better design than the 6 blade stamped steel fan used on cheaper models. Fan runs quiet with decent airflow. Electrically the fan uses the PVM105 1/7hp motor. Motor is rated at 1050rpm/1.9amps. Motor is heavy duty PSC design with a 10uf capacitor. PSC motor designs are much more efficient than the cheaper "shaded pole" motors. I hooked it up to a "kill-a-watt" and the Motor Amps read 1.51A, Wattage 163W, Power Factor .88. Power use for a month based on 10hr per day run time would be 50kwh/month. If you pay 10 cents per KWH it cost about $5/mo to run the fan. IMHO the extra $15 over the entry level fan is well worth it. In addition to the better fan blade/motor you also get a paint job. I'll write another review once the unit is actually installed on the roof. July 22, 2011
Rated 5.0 out of 5.0 by Roof mount vent This installs and wires up like a breeze. I highly recommend. September 16, 2014
Rated 5.0 out of 5.0 by Easy Install & quiet operating I purchased two of these for the home we recently bought in Florida. The home had two pre-install units that had the motors locked due to age. These new units had the same diameter (15 inches) for the required opening as the old units. Although the old motors were about half the size of the newer heavier duty motors, the brackets on the new units were shorter. This allowed me to reuse both the existing roof opening stacks and the caps from the old systems. My own install was simply a matter of climbing on the roof, removing 3 screws on the old top hat covers, and then removing the 3 fan bracket bolts on the side which retained the fan motor assembly. From that point I lifted the old fan assembly out, reached in and disconnected the wires, reconnected the new fan wires and slid the new unit in replacing the previously removed screws/bolts. As a side note, even though the install was made during mid December the thermostat controls on the new system (set at 95 degrees) have already kicked on automatically. The fan motor was very quiet and if I had not been sitting directly under one as if started I don't believe I would have known it was operating. The attic fan's operating noise can best be noted as quieter than a refrigerator. December 29, 2014
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