Bathroom Vent Clamps & Connectors


Lambro is a leading manufacturer of bathroom vent clamps and connectors that are necessary for completing a bathroom ventilation system. Our products are made from high-quality materials and backed by a limited warranty.

Lambro sells its products through a network of dealers, distributors, wholesalers and retailers in the United States.

All of our products meet or exceed local and national building codes. If you are a dealer or contractor contact Lambro. We will be happy to help you find the right product for your bathroom vent clamps and connector needs!


If you are a consumer and need new bathroom vent clamps or connector as replacement parts or because you are installing a bathroom ventilation system, contact your local big box or hardware store today for Lambro products!


3 Types of Bathroom Vent Clamps


Our product pages for bathroom vent clamps and connectors include Installation instructions. Some products pages will have spec sheets and an installation video as well.


Bathroom Vent Clamps

Bathroom vent clamps help to create an air-tight seal between the ventilation duct and the connector pipe on the bathroom exhaust fan and termination vent. Sealing the duct at these two points is important. Bathroom vent clamps will improve the efficiency of the exhaust fan.

Bathroom vent clamps are easy to install and do not require any special tools or equipment. They are relatively inexpensive, making them a great option for budget-conscious homeowners.

There are two main types of bathroom vent clamps -a screw-type and a spring-type. Lambro offers both types as well as offering adjustable nylon clamps which are easy to use and lock quickly and securely around a flexible duct. Wholesale pack quantity is 50. Retail packaging is a polybag with 2 Adjustable Nylon Clamps.



Screw-type clamps are the most common type of bathroom vent clamp. You create a tight seal by screwing the two halves of the clamp together.


Metal Gear Worm Clamps

Bathroom Vent Metal Gear Worm Clamps


Our metal gear worm clamps are available in a number of different diameters ranging from 3” to 8”. They are made of zinc plated steel with a unique design allowing for easy-to-tighten convenience. Whole sale pack quantities range from 24 for (2) – 4″ Metal Worm Gear Clamps with their retail packaging, a polybag, wholesale pack quantity for the 5” | 6” | 7″ | 8” Metal Worm Gear Clamps is 12 with a retail bulk pack.

The wholesale pack for the popular 4″ Metal Worm Gear Clamp contains 500, while its retail is bulk pack. The 3″ Metal Worm Gear Clamp wholesale pack contains 50, while for retail it is bulk pack.


To use a screw-type clamp:

1. Align the two halves of the clamp over the exhaust duct and either fan pipe, connector or pipe from exterior vent for roof, soffit or wall.

2. Insert the screws into the holes on the side of the clamp.

3. Tighten the screws until the two halves are securely attached

4. Do not overtighten the screws, since it can damage the vent or exhaust duct.



Spring-type clamps compress the two halves of the clamp together to create a tight seal. Lambro’s metal tension clamps with their 4″ maximum diameter are designed with an easy-to-use pressure mechanism for use in various applications without the need for any tools on non-rigid flexible ducts.


Bathroom Spring Tension Clamps


Lambro offers this type of 4″ Metal Tension Clamp to be sold singularly ITEM #2540 in Pack Quantity of 500/ Bulk Pack or with two clamps per packaging, ITEM #2541L in Pack Quantity of 50 with packaging in a retail polybag.


Bathroom Vent Connectors

Bathroom Vent Connector


Lambro offers galvanized connectors ranging in diameter from 3” , 4”, 5”, 6” 7” to 8” which can connect two lengths of ducts together using clamps. Spec sheets and installation instructions and Installation videos are found on our connectors product pages. We also offer a 4″ Galvanized Duct Extension Connector Kit which includes two 4″ Metal Worm Gear Clamps.

This connector design, in the popular diameter size of 4”. Is available in an aluminum version, ideal for situations where building codes require use of all aluminum ducts and connectors.

Although galvanized steel is much stronger than aluminum making it desirable for projects that require more strength and durability, its strength isn’t ideal for all ductwork.

Aluminum is sometimes preferred because of its ease of installation, lighter weight, good corrosion resistance, and ability to withstand high levels of heat.

Instead of buying your bathroom vent clamps and connector separately, Lambro makes it easy by offering a Galvanized Duct Extension Connector kit with a 4″ Galvanized Connector and two 4″ Metal Worm Gear Clamps. The wholesale pack contains 12, while the product comes in a polybag for retail purchases.


Bathroom Vent Connector Kit Packaging

Connect 2 lengths of non semi-rigid flexible ducts

Provides for easy cleaning


Lambro offers many types of bathroom vent kits.

The kits may have galvanized tension clamps, metal worm gear clamps, or adjustable nylon clamps. If you prefer a particular clamp make sure to see if the kit you are interested in includes it.


4″ X 8′ UL 2158A – Galvanized Transition Duct Louvered Vent Kit with Galvanized Tension Clamps.



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