Master Flow 4 in. 90 Degree Round Adjustable Elbow-B90E4 - The Home Depot

Master Flow

Model # B90E4

Internet # 100033952

Store SKU # 148717

4 in. 90 Degree Round Adjustable Elbow

Master Flow 4 in. 90 Degree Round Adjustable Elbow

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

$3.98 / each


Model # B90E4

Internet # 100033952

Store SKU # 148717

Store SO SKU # 755578

Master Flow's adjustable elbows are used to make turns in runs of round pipe and flexible duct through 90 degrees. They have a sturdy galvanized steel construction and are simple to adjust. They are also crimped on one end to easily fit into a pipe or other fitting of the same diameter.

  • Used to make angular or gradual turns in runs of pipe
  • Adjustable to any angle through 90 degrees
  • 30 gauge, galvanized steel construction
  • Always seal seams with building code approved sealant or duct tape
  • Always insulate ductwork for greater system efficiency and comfort

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Assembled Depth (in.)  4 in  Assembled Height (in.)  6 in 
Assembled Width (in.)  6 in  Maximum compatible pipe size (in.) 
Product Height (in.)  7.5  Product Length (in.)  4 in 
Product Width (in.)  4 in 
Compatible Pipe Material  Steel  Construction  One piece 
Gas Vent Pipe and Fittings Accessory Type  Vent Pipe  Material  Galvanized Steel 
Minimum compatible pipe size (in.)  Product Weight (lb.)  0.5 lb 
Returnable  90-Day 
Warranty / Certifications
Manufacturer Warranty  Free from Manufacturer Defect at Time of Delivery 



Standard Shipping includes delivery by small parcel service. Processing time varies by product.

Orders for this item may be expedited for an additional fee.

Other Delivery Options:

Express and Expedited shipping options are also available. Estimated arrival times are available in checkout.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.