Model # R5X4

Internet #100128235

Store SKU #100552

Store SO SKU #1000684245

Master Flow 5 in. to 4 in. Round Reducer
0050206925607

Master Flow

5 in. to 4 in. Round Reducer

$6.65 /each

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Product Overview

The Master Flow 5 in. x 4 in. Round Reducer features hemmed collar edges to offer an improved fit and increased strength. This part connects a 5 in. pipe to a 4 in. pipe in an HVAC system. It is made of 30-gauge, galvanized steel to provide strength and durability. It has a maximum temperature rating of 390°F.

  • Made of 30-Gauge, galvanized steel for strength and durability
  • Connects 5 in. pipe to a 4 in. pipe in an HVAC application
  • Hemmed collar edges designed to offer an improved fit and increased strength
  • Always seal seams with building code-approved sealant or duct tape (not included)
  • Always insulate ductwork for greater system efficiency and comfort (insulation not included)
  • Maximum temperature rating of 390°F, minimum temperature rating of -100°F

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Customer Reviews

5 in. to 4 in. Round Reducer is rated 4.2 out of 5 by 15.
Rated 5 out of 5 by from World changing! This is the best product ever. It reduces so smoothly from a whopping 5 inches down to 4 inches and you know it's quality because it's made out of metal and not plastic. The openings are so perfectly rounded that you can fit other round pieces of approximately the same size into each end. I don't know what the world would do without this reducer. I don't even want to imagine such a horror!
Date published: 2016-11-01
Rated 3 out of 5 by from I have over thirty years experience as an hvac contractor. This is a decent product. My concern... I have over thirty years experience as an hvac contractor. This is a decent product. My concern is the knowledge of the person buying it to properly install it. This is a "non crimped" reducer. If not installed properly flue gases can be released into the home. The large end MUST BE CRIMPED before this is installed........
Date published: 2016-10-25
Rated 1 out of 5 by from I had to use this because Home Depot did not have the enough 4 inch pipe in stock to do my job. P... I had to use this because Home Depot did not have the enough 4 inch pipe in stock to do my job. PLEASE KEEP YOUR STORE STOCKED BETTER. I ONLY RECOMMEND IF YOU NEED TO USE BECAUSE OF LOW STOCKS.
Date published: 2016-11-10
Rated 5 out of 5 by from this works just fine for the microwave. I needed to use this reducer as it was the only way I c... this works just fine for the microwave. I needed to use this reducer as it was the only way I could connect the vent.
Date published: 2016-11-09
Rated 1 out of 5 by from Poor quality Too too week. Could find the better grade. It did the job, but I'm sure won't last as much as the good grade one
Date published: 2016-12-27
Rated 5 out of 5 by from Did the job perfectly, the measurements were accurate, so it made for an easy install. Cheap and ... Did the job perfectly, the measurements were accurate, so it made for an easy install. Cheap and effective.
Date published: 2016-11-01
Rated 5 out of 5 by from Perfect fit for portable airconditioner to dryer vent conversion. I have a portable air conditioner and needed to exhaust the hot air. The hose is 5 inches and most vents are 4 inches. So, I reduced it at the exhaust point into a 4 inch dryer vent exhaust also available here at Home Depot. Works perfectly. Could not ask for more.
Date published: 2016-07-19
Rated 5 out of 5 by from round reducer was able to reduce the air flow for my portable air conditioner, hose sent with it was to short to be able to move it around the room for the best air conditioning.worked out very well after i purchased a plastic expando hose from true valve store.Purchased metal clamps also.
Date published: 2015-08-24
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