Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

4-in x 4-in Corrugated Coupling Fittings

Ratings & Reviews for FLEX Drain by Amerimax 4-in x 4-in Corrugated Coupling Fittings

4.1
140
See Product Details
Review
  4.1 out of 5
140 Reviews


65% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise the couplings for their ease of installation and reliable performance in connecting drainage pipes. Most highlight that they snap into place without tools and work effectively in French drain systems and foundation water diversion. However, some report concerns about thin, flimsy material construction and difficulty fitting onto ribbed or corrugated pipes. Several note the couplings run slightly smaller than pipe diameter, potentially affecting long-term security. Despite these drawbacks, the majority confirm the product performs its intended function and reduces leaks effectively.

Customer review summary generated by AI, including incentivized reviews.
140 Customer Reviews

But quality was not good enough

 Would Not Recommend

I like price

May 16, 2026
Verified Purchaser
Was this Review Helpful ?

Does what it's supposed to

 Would Recommend

Quick connection for two lengths of flex pipe, fit perfectly, no leaks

May 11, 2026
Verified Purchaser
Was this Review Helpful ?
Response from Amerimax Customer Care

We appreciate the positive review! EURAMAX_AMERIMAXRead More

Amerimax Customer CareMay 11, 2026

EURAMAX_AMERIMAX

This makes doing French Drains SOOO much easier

Very easy to install and durable

May 4, 2026
From 4-in x 4-in Corrugated Coupling Fittings Verified Purchaser
Was this Review Helpful ?
Response from Amerimax Customer Care

Thanks for the 5 star review! EURAMAX_AMERIMAXRead More

Amerimax Customer CareMay 4, 2026

EURAMAX_AMERIMAX

Extremely overpriced

 Would Not Recommend

This works fine but the prices are extreme

May 3, 2026
Verified Purchaser
Was this Review Helpful ?

Easy to use

 Would Recommend

Easy to install. Immediately effective at joining long peices of pipe.

April 24, 2026
From 4-in x 4-in Corrugated Coupling Fittings Verified Purchaser
Was this Review Helpful ?
Response from Amerimax Customer Care

We appreciate the 5 star review! EURAMAX_AMERIMAXRead More

Amerimax Customer CareApril 24, 2026

EURAMAX_AMERIMAX

Connector

 Would Recommend

The connector worked well.

April 23, 2026
Verified Purchaser
Was this Review Helpful ?
Response from Amerimax Customer Care

Thanks for the 5 star review! EURAMAX_AMERIMAXRead More

Amerimax Customer CareApril 24, 2026

EURAMAX_AMERIMAX

Its reliable

 Would Recommend

It worked well for connecting 2 of my drain pipes together

April 23, 2026
From 4-in x 4-in Corrugated Coupling Fittings Verified Purchaser
Was this Review Helpful ?
Response from Amerimax Customer Care

We appreciate the 5 star review! EURAMAX_AMERIMAXRead More

Amerimax Customer CareApril 24, 2026

EURAMAX_AMERIMAX

Gutters

Co.pany make to fit only start and end pipe

April 16, 2026
From 4-in x 4-in Corrugated Coupling Fittings Verified Purchaser
Was this Review Helpful ?

Useless/extra piece that shouldn’t even be needed.

 Would Not Recommend

Leaks and doesn’t fit securely.

April 16, 2026
From 4-in x 4-in Corrugated Coupling Fittings Verified Purchaser
Was this Review Helpful ?

Inventory is a mess.

 Would Not Recommend

The the bins of this product and related products were all a mess, inventory as shown on the website was totally wrong, half of the products were unfindable.

April 6, 2026
From 4-in x 4-in Corrugated Coupling Fittings Verified Purchaser
Was this Review Helpful ?