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.
'
Per page:  

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

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.

Petra SKU: LAM351G
Part No.: 130434
Vendor SKU: 351G/351GR
Retail Price: $19.99
  • 6-in. diameter, gray plastic wall cap damper is ideal for kitchen venting
  • Opening/closing damper and downward slant prevents outside elements from entering the vent
  • UV inhibitor helps prevent premature fading
  • Spring-loaded damper stays closed when not in use
  • Screen prevents birds from nesting inside vent

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

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

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.

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.

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

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

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.

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

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

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

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

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

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

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

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

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

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)

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

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

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

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

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

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

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

Petra SKU: LAO414
Part No.: 390698
Vendor SKU: 414
Retail Price: $17.99
  • Highly flexible
  • Installer friendly
  • Uninsulated
  • Operating temperature range: -86°F to 250°F
  • Resists tearing and puncturing

Petra SKU: LAO604W
Part No.: 390710
Vendor SKU: 604W
Retail Price: $8.49
  • Fixed louvers are stationary
  • Metal screen prevents outside elements from entering vent
  • Not recommended for dryer venting
  • UV inhibitor is used to help prevent the premature fading of vent