Choose Lambro for HVAC Ductwork

Lambro Industries, established in 1967, initially focused on distributing products to HVAC companies, electrical wholesalers, and lumber yards before expanding into manufacturing metal and plastic products in the mid-1970s. Today, Lambro offers a diverse range of venting and duct products, including semi-rigid, vinyl, and foil ducts, as well as vents and washing machine trays to protect floors. Petra Industries proudly serves as a wholesale distributor of Lambro's high-quality products, offering a comprehensive selection of ducts, duct kits, connectors, vents, vent guards, and washing machine trays. Whether customers require dryer venting, bathroom exhaust venting, or floor protection for washing machines, Lambro provides essential solutions to meet their needs.

RELATED CATEGORIES:

DUCTS VENT GUARDS & COVERS DUCT CONNECTORS & ELBOWS DUCTING KITS WASHING MACHINE TRAYS DUCTING ACCESSORIES

Lambro® 4-In. x 8-Ft. Flexible White Vinyl Duct with Clamps

Petra SKU: VENCPH48W

Part No.: 141016

Vendor SKU: 1303

Retail Price: $6.99

White PVC hose with steel helix wire for additional support
4 in. diameter, 8 ft. extended length
Ideal for bath fan exhaust and other general ventilation applications
Flexible design for easier installation
Can be cut to fit with excess trimmed away
Max operating temperature: 257°F; not for dryer venting
Includes 2 adjustable nylon clamps

Lambro® LamaFlex® 4-In. x 50 Ft. 4-Ply Aluminum Flex Duct

Petra SKU: VENPROFLEX

Part No.: 141067

Vendor SKU: 450 / TD450

Retail Price: $35.99

4-ply flex air connector for bathroom venting; do not use for dryer venting
Ideal for applications where building codes require use of all-aluminum ducts
Fire-retardant, with max operating temperature of 250°F
Max air handling capacity of 5,000 FPM
4 in. diameter x 50 ft.

Lambro® Plastic Wall Exhaust or Air Intake Vent with Hinged Screen and Removable Damper, Gray (6 In.)

Petra SKU: LAM351G

Part No.: 130434

Vendor SKU: 351G/351GR

Retail Price: $19.99

Can be used as either exhaust vent or intake vent as damper is removable
Maximum exhaust airflow with minimum back pressure
For new or replacement vent installations
Made of HIPS (high-impact polystyrene) plastic material
Opening and closing spring-loaded damper stays closed when not in use
Opening and closing screen prevents birds from nesting inside of vent; hinged and removable screen for easy cleaning
Accessible screw installation holes for caulk-friendly frame
UV inhibitor is used to help prevent premature fading of vent
Plastic vent is paintable when prepped prior to painting; plastic paint recommended
Installation screws not included

Lambro® 4-In. Aluminum Duct Connector

Petra SKU: LAM244

Part No.: 158357

Vendor SKU: 244-36

Retail Price: $2.99

Connects 2 pieces of 4-in. flexible aluminum duct
Aluminum construction
Crimped on both ends
Center bead
Always seal seams with code-approved mastic or sealant
Not for use in clothes dryer installations
Installation clamps or tie straps not included
Each

Lambro® 4" Dryer Vent Seal®

Petra SKU: LAO289W

Part No.: 236243

Vendor SKU: 289W

Retail Price: $29.99

Dryer vent seal
Replaces traditional dryer vent hoods
Floating shuttle remains closed unless the dryer is in use
Vent keeps out unwanted elements
Paintable to match any home

Lambro® Washing Machine Tray (Standard)

Petra SKU: LAO1780

Part No.: 236244

Vendor SKU: 1780

Retail Price: $31.99

Fits underneath standard-size washing machines
Collects and drains water due to overflows
Ideal for second-floor laundry rooms
Won't bend or rust like metal pans
Protects floors from leaks and scuffs
Includes instructions, 1 in. drain fitting, washer, and nut
29 in. x 31 in.

Lambro® Washing Machine Tray (Oversized)

Petra SKU: LAO1781

Part No.: 236245

Vendor SKU: 1781

Retail Price: $42.99

Fits underneath oversized washing machines
Collects and drains water due to overflows
Ideal for second-floor laundry rooms
Won't bend or rust like metal pans
Protects floors from leaks and scuffs
Includes instructions, 1 in. drain fitting, washer, and nut
Oversized
31 in. x 36 in.

Lambro® 4" Plastic Under-Eave Vent

Petra SKU: LAO143W

Part No.: 236246

Vendor SKU: 143W

Retail Price: $7.99

4" plastic under-eave vent
Damper prevents outside elements from entering the vent
Can be used for clothes dryers as well

Lambro® 4-Inch Diameter x 8-Foot Premium RigiFlex Duct with Clamps

Petra SKU: LAO328ULTC

Part No.: 341517

Vendor SKU: 328ULT-C

Retail Price: $19.99

Clothes dryer transition duct
UL 2158A
Suitable for all electric and gas clothes dryers
Rigid yet flexible; will not collapse
Maximum airflow
Less lint buildup
All metal design
Dryer manufacturer recommended
Includes two 4 in. galvanized worm gear clamps

Lambro® 3.25-In. x 10-In. Aluminum Wall Cap

Petra SKU: LAO106R

Part No.: 390713

Vendor SKU: 106R

Retail Price: $32.99

Opening/closing damper prevents outside elements from entering the vent
Damper is spring loaded to keep damper closed when not in use
Durable aluminum material
3.25 in. x 10 in.

Lambro® 4-In. Aluminum Exhaust Roof Vent Cap with Screen, Damper, and Collar, 109R

Petra SKU: LAO109R

Part No.: 390714

Vendor SKU: 109R

Retail Price: $35.99

Opening/closing damper prevents outside elements from entering the vent
Compatible with part number 636AL
Maximum exhaust outflow with minimum back pressure
Screen prevents birds from nesting inside of vent
Designed to prevent leaks with proper installation
Not recommended for clothes dryer venting

Lambro® 4-In. x 8-Ft. UL® 2158A Transition Duct Vent Kit

Petra SKU: LAO1375W

Part No.: 390711

Vendor SKU: 1375W

Retail Price: $21.99

Opening/closing damper prevents outside elements from entering the vent
Removable screen
Flexible laminated foil design for easier installation
Ideal for both gas and electric dryer installations
UL 2158A listed and labeled as a clothes dryer transition duct
UV inhibitor is used to help prevent the premature fading of vent
Includes 4 in. white plastic preferred hood vent with 11 in. tail pipe, 4 in. white plastic trim plate, 4 in. x 8 ft. UL 2158A laminated transition duct, and 4 in. galvanized tension clamps

Lambro® 4-In. x 8-Ft. UL 2158A Transition Duct Louvered Vent Kit

Petra SKU: LAO1379W

Part No.: 390712

Vendor SKU: 1379W

Retail Price: $19.99

Opening/closing flaps prevents outside elements from entering the vent
Flexible laminated foil design for easier installation
Ideal for both gas and electric dryer installations
UL 2158A listed and labeled as a clothes dryer transition duct
UV inhibitor is used to help prevent the premature fading of vent
Includes 4 in. white plastic louvered vent with 11 in. tail pipe, 4 in. white plastic trim plate, 4 in. x 8 ft. UL 2158A laminated transition duct, and 4 in. galvanized tension clamps

Lambro® 4-In. x 8-Ft. UL® 2158A Premium Flexible Semi-Rigid Duct Louvered Vent Kit

Petra SKU: LAO1379WGR

Part No.: 390701

Vendor SKU: 1379WG-R

Retail Price: $26.99

UL 2158A Certified
Airtight design
Fire resistant
Improved airflow
Highly flexible
Installer friendly
Patented
Uninsulated
Operating temperature range: -86°F to 482°F
Max. velocity: 5,000 FPM
Includes duct, vent, pipe, and clamps

Lambro® 4-In. White Plastic Preferred Hood Vent with Tail Pipe and Removable Screen

Petra SKU: LAO224W

Part No.: 390704

Vendor SKU: 224W

Retail Price: $16.99

Allows for maximum exhaust airflow in 4 in. exhaust venting applications
For new or replacement vent installations
Built-in damper prevents back drafts
Removable guard prevents critters from entering home through vent
11 in. length pipe for through the wall installation
Installation screws and clamps sold separately

Lambro® 4-In. White Plastic Under Eave Vent with Weather Damper and Tail Pipe

Petra SKU: LAO143WTP

Part No.: 390702

Vendor SKU: 143WTP

Retail Price: $9.99

Opening/closing flaps prevents outside elements from entering the vent
For new or replacement vent installations
Low profile design
3 in. length tail pipe for through-the-eave installation
Installation screws and clamps sold separately

Lambro® 4-In. 90° Aluminum Adjustable Elbow

Petra SKU: LAO2310

Part No.: 390716

Vendor SKU: 2310

Retail Price: $6.49

Made from 26-gauge aluminum
Adjustable to various angles depending on installation
Primary use with rigid snap lock pipe
Can be used with semi-rigid duct
1 end crimped for easy installation with other components
Installation clamps sold separately

Lambro® 4-In. White Plastic Louvered Vent

Petra SKU: LAO267W

Part No.: 390705

Vendor SKU: 267W

Retail Price: $14.99

Opening/closing flaps prevent outside elements from entering the vent
For new or replacement vent installations
Low profile design
11 in. length pipe for through the wall installation
Installation screws and clamps sold separately

Lambro® 4-In. White Plastic Louvered Vent with Tail Piece and Bird/Rodent Guard

Petra SKU: LAO267WG

Part No.: 390703

Vendor SKU: 267WG

Retail Price: $16.99

Removable guard allows for easy cleaning
Opening/closing flaps prevents outside elements from entering the vent
For new or replacement vent installations
Low profile design
11 in. length pipe for through the wall installation
Installation screws and clamps sold separately

Lambro® Tite Fit® 90° Rectangular Aluminum Dryer Duct

Petra SKU: LAO3006

Part No.: 390709

Vendor SKU: 3006-R

Retail Price: $24.99

Tight space dryer venting solution ideal for limited space behind dryer
Extends from 24 in. to 41 in. to accommodate installation needs
90° connections allow for tight space installations
Ideal for laundry closet installations
Installation requires two 4 in. worm drive clamps (sold separately)

Lambro® 8-Ft. Flexible Semi-Rigid Aluminum Duct (3 In. Diameter)

Petra SKU: LAO301

Part No.: 390691

Vendor SKU: 301

Retail Price: $12.99

Airtight design
Fire-resistant
Class 0 air duct
Improved airflow
Highly flexible
Installer-friendly
Patented
Uninsulated
Operating temperature range: -86°F to 400°F
Max. velocity: 5,000 FPM
3 in. diameter

Lambro® 8-Ft. Flexible Semi-Rigid Aluminum Duct (4 In. Diameter)

Petra SKU: LAO302L

Part No.: 390692

Vendor SKU: 302L

Retail Price: $13.99

Airtight design
Fire-resistant
Class 0 air duct
Improved airflow
Highly flexible
Installer-friendly
Patented
Uninsulated
Operating temperature range: -86°F to 400°F
Max. velocity: 5,000 FPM
4-in. diameter

Lambro® 8-Ft. Flexible Semi-Rigid Aluminum Duct (6 In. Diameter)

Petra SKU: LAO306

Part No.: 390694

Vendor SKU: 306

Retail Price: $19.99

Airtight design
Fire-resistant
Class 0 air duct
Improved airflow
Highly flexible
Installer friendly
Patented
Uninsulated
Operating temperature range: -86°F to 400°F
Max. velocity: 5,000 FPM
6-in. diameter

Lambro® 8-Ft. Flexible Semi-Rigid Aluminum Duct (7 In. Diameter)

Petra SKU: LAO308

Part No.: 390695

Vendor SKU: 308

Retail Price: $21.99

Airtight design
Fire-resistant
Class 0 air duct
Improved airflow
Highly flexible
Installer-friendly
Patented
Uninsulated
Operating temperature range: -86°F to 400°F
Max. velocity: 5,000 FPM
7-in. diameter

Lambro® 8-Ft. Flexible Semi-Rigid Aluminum Duct (8 In. Diameter)

Petra SKU: LAO310

Part No.: 390696

Vendor SKU: 310

Retail Price: $26.99

Airtight design
Fire-resistant
Class 0 air duct
Improved airflow
Highly flexible
Installer friendly
Patented
Uninsulated
Operating temperature range: -86°F to 400°F
Max. velocity: 5,000 FPM
8-in. diameter

Lambro® 8-Ft. Flexible Semi-Rigid Aluminum Duct (10 In. Diameter)

Petra SKU: LAO317

Part No.: 390697

Vendor SKU: 317

Retail Price: $36.99

Airtight design
Fire-resistant
Class 0 air duct
Improved airflow
Highly flexible
Installer-friendly
Patented
Uninsulated
Operating temperature range: -86°F to 400°F
Max. velocity: 5,000 FPM
10-in diameter

Lambro® Plastic Wall Exhaust or Air Intake Vent with Hinged Screen and Removable Damper, Gray (8 In.)

Petra SKU: LAO389G

Part No.: 390707

Vendor SKU: 389G

Retail Price: $41.99

Can be used as either exhaust vent or intake vent as damper is removable
Maximum exhaust airflow with minimum back pressure
For new or replacement vent installations
Made of HIPS (high-impact polystyrene) plastic material
Opening and closing spring-loaded damper stays closed when not in use
Opening and closing screen prevents birds from nesting inside of vent; hinged and removable screen for easy cleaning
Accessible screw installation holes for caulk-friendly frame
UV inhibitor is used to help prevent premature fading of vent
Plastic vent is paintable when prepped prior to painting; plastic paint recommended
Installation screws not included