US
Lambro Industries

Lambro Industries 143WP Plastic Under Eave Vent 4In White 2-Pack

  • 4 in vent size Listed as a 4In under eave vent
  • Two vents in the pack White plastic, sold as a 2-Pack
  • Built-in damper Blocks outside elements from entering the duct
  • Fan and dryer use Made for bathroom fan and dryer venting
  • Under-soffit mounting Made in the USA

Updated 23 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A straightforward exterior vent pair for ducts that end under the soffit. Check your duct size first, since the listing gives only the nominal size and no cover dimensions.

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ASIN: B086MJRKP8Model: 143WP

Overview

Lambro sells this model as a pair of white plastic vents with a damper built in. They are meant to sit under the eave or soffit and finish off a duct run from a bathroom fan or a dryer.

Two matching vents in one box, plus a damper that blocks weather and outside air from backing into the duct, make this a tidy buy for a soffit exit. The listing stays thin elsewhere: no cover size, no screen or pest guard details and no hardware list.

Who it's for

Think of a home with a bathroom fan and a dryer that both exit under the roof overhang. One box covers both outlets in the same color, so the exterior trim looks uniform. Anyone venting out of a gable end needs a different style.

Pros and cons

Pros
  • Two vents in one pack
  • Damper included for the duct
  • Suits exhaust from fans and dryers
  • Made in the USA
Cons
  • Cover dimensions not listed
  • No pest or lint guard details
  • Mounting hardware not mentioned

Performance notes

The damper opens when exhaust pushes air out and closes against the outside when airflow stops, which is how it blocks weather. Airflow still depends on the duct behind it: length, bends and a clean run matter more than the cap.

Specifications

BrandLambro Industries
Model143WP

Frequently asked questions

Can the Lambro 143WP be used for a dryer?

Yes. The seller lists dryer venting as one of its two intended uses, with a damper to block outside elements.

Is this a wall or roof vent?

No. It is described as an under eave vent for soffit applications, so it is not a fit for other exits.