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IMPERIAL Galvanized steel 4-in Dia Duct end cap

Name: IMPERIAL Galvanized steel 4-in Dia Duct end cap
Brand: IMPERIAL
SKU: 50257171
Price: 7.98 USD
Availability: InStock
Rating: 4.5 (57 reviews)

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4.5

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Shipping Details

This sturdy Imperial 4-in Crimped Round End Cap is designed to terminate the non-crimped end of a round pipe run. The crimped end cap installs easily with sheet metal screws for a secure fit (screws sold separately). Suitable for most heating, venting and air conditioning applications, the end cap is made from 30-gauge galvanized steel for rust resistance and long-lasting durability.

Use to terminate the non-crimped end of a round pipe run
Constructed from 30-gauge galvanized steel for durability and rust resistance
Installs easily with sheet metal screws (not included)
Suitable for use in most HVAC applications
Size: 4-in diameter

General
Type	Round Duct End Cap	Material	Galvanized steel

Dimensions
Diameter (Inches)	4	Length (Inches)	0
Height (Inches)	2	Width (Inches)	0

Features
Arrestor Included	No	Gauge	30
Crimped	Yes

Certifications
CA Residents: Prop 65 Warning(s)	No	Safety Listing	Not safety listed

Warranty
Warranty	1-year limited

Miscellaneous
UNSPSC	40141900

Check out the Best Selling Duct Caps on Lowes.com

Review

4.5 out of 5

57 Reviews

87% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this duct cap for its reliable performance and snug fit into standard sizes without adapters needed. Most highlight its effectiveness sealing dryer vents, HVAC ducts, and abandoned gas lines after renovations. Reviewers consistently note it "does the job" as intended, with many appreciating the fair price and straightforward installation. A few report missing components like rubber seals or sizing mismatches, though these are isolated concerns. Overall, customers find it a dependable, practical solution that delivers strong value.

Customer review summary generated by AI, including incentivized reviews.

57 Customer Reviews

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Great features

Love my new washer and dryer!

Nay 2August 22, 2026
Verified Purchaser

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Works

Exactly as described

NkkphiriMay 7, 2026
Verified Purchaser

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Variety helped this shopping trip to be a succ.

Would Recommend

RoboApril 27, 2026
Verified Purchaser

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Kitchen projects

We are in the process of redoing our kitchen and when taking down the slats and plaster we found a hole in the chimney plugged with rocks and concrete and we wanted to get the area ready for drywall and the 4" plug was what we needed

Homeward boundApril 27, 2026
Verified Purchaser

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My dryer vent is a 4" but the plug didn't fit

Would Not Recommend

Mcg766April 18, 2026
Verified Purchaser

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to large to fit in a 4" dryer vent

Would Recommend

mcg766April 9, 2026

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Works like a charm!

Would Recommend

Terminate an ac duct.very easily.

MichaelApril 8, 2026
Verified Purchaser

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