Lomanco® Roof Jack VentsRoof Jack Vents for Exhaust Fans

NEW! Lomanco® Roof Jack Vents.

Roof Jack installation

The new Lomanco Bath PRO™ Roof Jack solves your bathroom exhaust vent problems and is backed by Lomanco, the most trusted name in residental ventilation! Lomanco Roof Jack vents are available in two sizes to fit all of your bathroom, kitchen, and other home exhaust vents. The Lomanco Bath PRO™ Roof Jack fits all 3" and 4" round ductwork. The Lomanco Kitchen PRO™ Roof Jack fits all 6" to 8" round ductwork and 3-1/4"x 10" rectanglar ductwork.

Common Features

Lomanco Roof Jack vents are designed to provide a weather proof cover on your roof for exhaust ducts coming from home exhaust fan. Each roof jack vent offers maximum weather protection. All Lomanco Roof Jack vents are galvanized steel construction with a black environmental epoxy finish that can be left as is or used as a primer for painting the roof jack a color of your choice. Other common features include a built in pest screen, aluminum draft damper, and an integrated flange.

Easy Installation

Lomanco Roof Jack vents offer fast and easy installation, and are designed to be installed on any roof pitch.

  • Features
  • Instructions
  • Literature
  • Model Info

Lomanco® Bath PRO™ Model BRV34

  • Use with 3" or 4" round ductwork.
  • Galvanized steel construction with environmental epoxy finish.
  • Built-in pest screen.
  • Aluminum gravity draft damper flap.
  • Integrated flange.
  • Designed for fast and easy installation.
  • Used to vent bath fans and other exhaust fans.*

Lomanco® Bath PRO™ Kit Model BRV34KIT

  • Includes the Lomanco BRV34 Roof Jack above.
  • 8 feet of 4" diameter aluminum flexible ducting with two nylon hose tie clamps.
  • Use with 3" or 4" exhaust fan outlet.
  • Neoprene 3" to 4" duct adapter.
  • 4" duct connector provides quick and easy hose attachment to vent.
  • Kit is designed for fast and easy installation.
  • Used to vent bath fans and other exhaust fans.*

Lomanco® Kitchen PRO™ Model KV68

  • Use with 6" - 8" round or 3-1/4" x 10" ductwork.
  • Galvanized steel construction with environmental epoxy finish.
  • Built-in pest screen.
  • Aluminum draft damper.
  • Integrated flange.
  • Designed for fast and easy installation.
  • Used to vent kitchen fans and other exhaust fans.*

*Do not use for clothes dryer exhaust. Consult building codes before installation.

Lomanco® Roof Jack for exhaust fans Instructions

Model Name Description Link
BRV34 BATH PRO Roof Jack for 3" & 4" Exhaust Fans “DL”
BRV34KIT BATH PRO KIT Packaged Kit for BRV34 Roof Jack “DL”
KV68 KITCHEN PRO Roof Jack for 6"-8" & 3-1/4" x 10" Exhaust Fans “DL”

Lomanco® Roof Jack Information

Lomanco® Roof Jack Specifications

Click to view Color Codes chart.

Model Color Overall Size (in.) Opening Size (in.) CTN. QTY. CTN. WT. (lbs.) Single CTN. WT. (lbs.)
BRV34 BL 12 x 10 x 6 3 to 4 16 32 2
BRV34KIT BL 12 x 10 x 6 3 to 4 1 3.5 3.5
KV68 BL 14.188 x 18.75 x 6.5 6 to 8* 1 5.15 5.15

*Model KV68 allows 6" to 8" round or 3.25" x 10" ductwork.