Ductwork - Accessories

Ductwork Accessories

Product availability is subject to change without notice. Not all products are available from all facilities.

Galvanized Flat Sheet

Master Flow's Galvanized Steel Flat Sheet is the ultimate product for custom fittings. This flat sheet is made of 30-gauge galvanized steel for durability and sturdiness. You can cut this sheet into almost any size for your job. Great for general needs other than HVAC as well.

  • Made of 30 Gauge galvanized steel
  • Can be cut to size as needed


Straps & Hangers


3/4 HS

Perforated Hanger Strap - Hang round pipe, rectangular duct or other plumbing pipes with the Master Flow Perforated Metal Hanger Straps and prevent the system from sagging over long runs. These durable galvanized-steel straps are easy to install with nails or screws.

  • Galvanized steel construction
  • For hanging round pipe or rectangular duct
  • Suitable for a variety of plumbing and HVAC application
  • Easy to install with nails or screws



HS1.75WV

Woven Vinyl Hanger Strap Woven Vinyl Hanger Straps are used to hang insulated flexible duct, round pipe or rectangular duct. This helps prevent the duct system from sagging over long runs.

  • Can be installed using nails or screws
  • Meets all codes for 1 3/4in. straps needed
  • Can be cut with knife or scissors
  • Can be used for multiple HVAC projects
  • Product may be gray or black in color



Flexible Duct Connectors

Flexible Duct Connectors serve as a coupling between two sections of insulated flexible duct. Both ends of the connector have a bead to provide adequate holding power. Each end is also crimped to ensure an easy fit every time.

  • Two stop beads provide adequate holding power for two separate tie straps
  • Crimped on both sides for an easy fit
  • Always seal seams with code approved mastic or sealant or duct tape
  • Install with sheet metal screws



Ceiling Collars

The Ceiling Collar has a slightly oversized opening to accommodate pipe. This collar is designed for use as a finishing piece to help hide surface imperfections where pipe passes through a ceiling, wall or floor. It is made of 30-gauge, galvanized steel to provide strength and durability.

  • Made of 30-gauge, galvanized steel for strength and durability
  • Designed for use as a finishing piece to cover imperfections where pipe passes through a ceiling, wall or floor
  • A slightly oversized opening to accommodate 4 in. pipe



Round Duct Caps

Round Duct Caps are designed to terminate a round pipe run in a HVAC system. This cap is made with sturdy galvanized steel and is designed to install easily with sheet metal screws.

  • Sturdy galvanized-steel construction
  • Terminates a round duct run in an HVAC system
  • Install with sheet metal screws - Seal seams with code-approved mastic, sealant or duct tape



Rectangular Duct Caps

Rectangular Duct Caps are used to terminate a rectangular duct run in an HVAC application. This rectangular duct cap is made of 30-gauge, galvanized steel for strength and durability. It can be installed using appropriate sheet metal screws.

  • Made of 30-gauge, galvanized steel for strength and durability
  • Terminates a rectangular duct run in an HVAC system
  • Use sheet-metal screws for an easy installation - Always seal seams with code-approved mastic, sealant or duct tape



"S" & Drive Cleats

Master Flow Drive Cleats and "S" Cleats, are used to join sections of rectangular duct in HVAC systems. These cleats are sleeves of galvanized steel that help to securely assemble the top and bottom ("S") and left and right sides (Drive) of rectangular duct runs.

  • Galvanized steel construction
  • Always seal seams with code approved mastic or sealant (or duct tape)



Dampers

Dampers balance and adjust the air flow in individual runs of round pipe in HVAC systems. Our dampers include hardware that make it easy to install into existing round pipe as well as new.

  • Spring-loaded hardware for easy mounting into existing round pipe
  • Galvanized steel construction
  • Helps to control airflow in a run of pipe



Bathroom Fan Eave Vent

The Bathroom Fan Eave Vent is used to vent bathroom exhaust outside through the undereaves. Features include easy installation and a white louver to match most undereaves.

  • Easy installation with a router saw
  • White plastic louver to blend in with the eaves
  • Wedged sides of a louver makes installation easy



Fiberglass Weave Fabric

Fiberglass Weave fabric is slightly tacky to make for an easier installation. This duct repair fabric provides closure for duct-board boxes and helps patch leaks and holes. To help ensure an airtight seal, it can be used with mastic as code dictates.

  • Fiberglass repair fabric
  • Provides closure to duct-board boxes and helps repair leaks and holes
  • Slightly tacky for an easier installation
  • Attach with staples to duct board, then apply mastic as code directs



Duct Mastic/Sealant

Master Flow’s Duct Mastic is a water-based adhesive that creates an air-tight seal on duct seams and joints by eliminating air leakage. Sealant increases the overall efficiency of the duct system, which can cut energy costs. Available in tubes or tubs.

  • Meets or exceeds most energy codes
  • Seals ducts systems to eliminate air leakage and conserve energy
  • Use at any duct connection


Duct Wrap & Sleeves


Duct Wrap

Use this R6.0 - 60 sq. ft. Fiberglass Duct Wrap Insulation to reduce condensation, absorb noise and improve the air temperature efficiency of your duct system.

  • Wraps around new or existing ductwork
  • R-6 value meets or exceeds most energy codes and helps reduce energy costs
  • Easy installation for new and existing ductwork



Duct Sleeves

Wrap your new or existing ductwork with this Master Flow Ductwork Sleeves and enjoy consistent air temperature and reduced system condensation and noise.

  • R6.0 insulated for effective insulation of your duct system
  • Wraps around existing ductwork or slides on new duct pipe
  • Reduces mold-causing condensation and absorbs draft and duct system noise

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