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Master Flow

Model # WVA4

Internet # 100396975

Store SKU # 587706

4 in. Round Wall Vent

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

$20.48 /each




Model # WVA4

Internet # 100396975

Store SKU # 587706

Store SO SKU # 755578

Master Flow 4 in. Aluminum Round Wall Vents are designed for use as the outside sidewall termination of kitchen and bath fans, range hoods, microwave venting, dryer exhaust systems or other needs (not included). These light, easy-to-install vents are made out of durable aluminum.

  • Foam gasket for a more quiet operation
  • Built in screen to prevent insect entry (Must be removed if using for Dryer Venting)
  • All aluminum construction
  • 4 in. Diameter
  • Always seal exterior flashing to reduce leakage
  • Note: Product may vary by store.

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Length (in.) 
7 in 
Product Width (in.) 
Duct Type 
4" Round 
Warranty / Certifications
Certifications and Listings 
No Certifications or Listings 


Rated 4.0 out of 5 by 9 reviewers.
Rated 4.0 out of 5.0 by Great product for the price. Easy to replace, takes paint well and last longer than the plastic models.. September 15, 2015
Rated 2.0 out of 5.0 by Decent Vent With Big Reservations Vent tube measures about 4.5" in length. I forgot to measure its length before installation. Good practice to spec the layout before too deep in the job. I used 4" galvanized vent pipe which presumably will not accumulate fiber particles as had the flexible vent pipe it replaced. The leaky seal of my dryer filter had not presented a problem before as my previous dryer vent had no bird/insect screen. This screen fills very quickly with fiber particles which can be mostly cleared with a brush from the outside while dryer is in use. This vent would be perfect for non-particulate laden air and would be much better with an easily removable bird/insect screen for dryer vent applications.. May 30, 2015
Rated 5.0 out of 5.0 by Happy with purchace bought plastic cover first and it was just a disaster installing it, should've saved myself aggravation and bought this one in the first place November 12, 2013
Rated 5.0 out of 5.0 by Been up on the walls for more than 2 years. Still look good and work well I have two of these on outlets from my bathroom vents, and one of these on the kitchen extractor. All were well made, easy to install, look nice and neat on the outside of the house and are working well. I like that they include the metal grills to keep critters out, and the damper always returns to the 'closed' position. When I put them up I thought they'd be ugly on the exterior of the house but you don't really notice them and actually they look quite good. February 26, 2015
Rated 3.0 out of 5.0 by it works works like it should easy to install what would you like me to write December 17, 2014
Rated 4.0 out of 5.0 by average,,, pricey, but worth it compared to the plastic vents September 14, 2014
Rated 3.0 out of 5.0 by Simple dryer vent with a flap, made from thin gauge aluminum Being made of aluminum should mean this vent will last for along time, although it's made from a very thin gauge. The flap valve doesn't open more than about 30 degrees, so you have to wonder whether it will allow an unimpeded air flow when the dryer is running. I returned it and bought a heavier plastic vent that opens more. June 17, 2014
Rated 5.0 out of 5.0 by exactly what I needed to vent my Microwave oven. It was exactly what I needed--hooked up my vent--works perfectly. Thanks May 20, 2014
  • 2015-10-04T11:37:04.532-05:00
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