Flex Duct, Boots, Collars & Grilles

111 records, red lane first.

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Diffuser Blowing Across an Open Refrigerated Case
Foreman script · 3rd Year
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Flex Listing And Where It's Allowed
Field problem · 4th Year
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Flex Listing And Where It's Allowed
Foreman script · 2nd Year
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How do I install a volume damper in a spin-in collar before attaching the flex?
Apprentice question · 2nd Year
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What is the SMACNA maximum allowable length for a flex duct run?
Apprentice question · 2nd Year
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What's the correct way to seal a flex duct connection (zip tie vs. metal band vs. tape/mastic)?
Apprentice question · 2nd Year
Check first
Balancing Damper At Takeoff
Field problem · 2nd Year
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Balancing Damper At Takeoff
Foreman script · 2nd Year
Check first
Boot to Diffuser Connection
Field problem · 2nd Year
Check first
Boot to Diffuser Connection
Foreman script · 1st Year
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Calling a diffuser a register and a register a grille (wrong terminology with the GC)
Common mistake · 2nd Year
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Condensation Appears Above Freezer or Refrigerated Aisles
Foreman script · 2nd Year
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Connecting Flex To A Collar
Field problem · 2nd Year
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Connecting Flex To A Collar
Foreman script · 1st Year
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Drywall crushes flex duct in a wall cavity
Apprentice question · 2nd Year
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Flex Bend Radius And Kinks
Field problem · 2nd Year
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Flex Bend Radius And Kinks
Foreman script · 1st Year
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Flex Duct Maximum Length
Field problem · 2nd Year
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Flex Duct Maximum Length
Foreman script · 1st Year
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Flex Duct Support Spacing
Field problem · 2nd Year
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Flex Duct Support Spacing
Foreman script · 1st Year
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Flex Length And Sag Limits
Field problem · 2nd Year
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Flex Length And Sag Limits
Foreman script · 1st Year
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How do I balance a scissor lift while cutting in a heavy linear slot diffuser?
Apprentice question · 2nd Year
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How do I cut a spin-in collar into a piece of round spiral duct?
Apprentice question · 2nd Year
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How do I install a register boot in a hard-lid (drywall) ceiling so it sits flush?
Apprentice question · 2nd Year
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How do I keep my flex duct cuts clean without tearing the inner core?
Apprentice question · 2nd Year
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How do I properly strap flex duct to avoid "sag" and restricted airflow?
Apprentice question · 2nd Year
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How do you fix a linear slot plenum box that will not fit because the ceiling framing is tight?
Apprentice question · 2nd Year
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I need to order flex and I am not sure how much to get
Field problem · 2nd Year
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Installing a flexible connection without enough slack, transmitting vibration
Common mistake · 2nd Year
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Not sizing a flex duct collar to match the rigid duct diameter, causing flow restriction
Common mistake · 2nd Year
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Saddle Tap Vs Cut-In Tap
Field problem · 2nd Year
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Saddle Tap Vs Cut-In Tap
Foreman script · 2nd Year
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Sealing Flex Connections
Field problem · 2nd Year
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Sealing Flex Connections
Foreman script · 1st Year
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Slot Diffuser Installation
Field problem · 2nd Year
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Slot Diffuser Installation
Foreman script · 2nd Year
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Supporting Boots And Drops
Field problem · 2nd Year
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Supporting Boots And Drops
Foreman script · 1st Year
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Supporting Flex Correctly
Field problem · 2nd Year
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Supporting Flex Correctly
Foreman script · 1st Year
Check first
What's the difference between a lay-in diffuser and a surface-mount grille?
Apprentice question · 2nd Year
Check first
What's the trick to running flex duct over a congested plumbing rack without pinching it?
Apprentice question · 2nd Year
Check first
Why does a 45-degree spiral riser keep slipping out of the elbow throat?
Apprentice question · 3rd Year
Coordinate
Collars And Starting Collars
Foreman script · 1st Year
Coordinate
Conical Branch Taps
Foreman script · 2nd Year
Coordinate
Diffuser Boots And Register Boots
Foreman script · 1st Year
Coordinate
Diffuser Face Size vs Neck Size
Foreman script · 1st Year
Coordinate
Flex-To-Diffuser Neck Fit
Foreman script · 1st Year
Coordinate
Laying Out Tap Holes On Trunk
Foreman script · 2nd Year
Coordinate
Return Air Grille vs Supply Diffuser
Foreman script · 1st Year
Coordinate
When To Use Metal Instead Of Flex
Foreman script · 1st Year
Standard
Collars And Starting Collars
Field problem · 1st Year
Standard
Conical Branch Taps
Field problem · 1st Year
Standard
Diffuser Boots And Register Boots
Field problem · 1st Year
Standard
Diffuser Direction And Throw
Field problem · 1st Year
Standard
Diffuser Direction And Throw
Foreman script · 1st Year
Standard
Diffuser Face Size vs Neck Size
Field problem · 1st Year
Standard
Flex-To-Diffuser Neck Fit
Field problem · 1st Year
Standard
How do I fix flex duct that kinks right off the plenum box?
Apprentice question · 1st Year
Standard
Laying Out Tap Holes On Trunk
Field problem · 1st Year
Standard
Return Air Grille vs Supply Diffuser
Field problem · 1st Year
Standard
What should I check when flex duct is sagging and starving a room?
Apprentice question · 1st Year
Standard
When To Use Metal Instead Of Flex
Field problem · 1st Year
Standard
Why can overtightening a flex duct band clamp hurt the installation?
Apprentice question · 1st Year
Standard
Why did the slot diffuser boot rotate after connecting the round branch?
Apprentice question · 2nd Year
Standard
Why does flex duct kink right at a register boot collar?
Apprentice question · 1st Year
Standard
Why is it bad to brace across a flexible duct connector?
Apprentice question · 3rd Year
Standard
Why should you not hammer a grille frame into a tight wood door opening?
Apprentice question · 1st Year
Reference
Air Drop
Definition · 1st Year
Reference
Air changes per hour
Definition · 1st Year
Reference
Airflow Direction
Reference · 1st Year
Reference
Anti-smudge ring
Definition · 1st Year
Reference
CFM
Definition · 1st Year
Reference
Collar hole size
Reference · 1st Year
Reference
Core diffuser
Definition · 1st Year
Reference
Core removal
Definition · 1st Year
Reference
Core velocity
Definition · 1st Year
Reference
Damper box
Definition · 1st Year
Reference
Diffuser
Definition · 1st Year
Reference
Diffuser boot
Definition · 1st Year
Reference
Eggcrate grille
Definition · 1st Year
Reference
Exhaust grille
Definition · 1st Year
Reference
Face size
Definition · 1st Year
Reference
Face velocity
Definition · 1st Year
Reference
Flex Duct Basics
Reference · 1st Year
Reference
Flex route length
Reference · 1st Year
Reference
Grille
Definition · 1st Year
Reference
Linear diffuser
Definition · 1st Year
Reference
Louvered face diffuser
Definition · 1st Year
Reference
Measure the duct opening, not the grille frame
Reference · 1st Year
Reference
Neck size
Definition · 1st Year
Reference
Noise criteria
Definition · 1st Year
Reference
Opposed blade damper box
Definition · 1st Year
Reference
Perforated diffuser
Definition · 1st Year
Reference
Perforated face
Definition · 1st Year
Reference
Plenum slot diffuser
Definition · 1st Year
Reference
Pressure drop
Definition · 1st Year
Reference
Register
Definition · 1st Year
Reference
Return air grille
Definition · 1st Year
Reference
Return diffuser
Definition · 1st Year
Reference
Single blade damper box
Definition · 1st Year
Reference
Spread
Definition · 1st Year
Reference
Step-down diffuser
Definition · 1st Year
Reference
Supply diffuser
Definition · 1st Year
Reference
Surface mount diffuser
Definition · 1st Year
Reference
T-bar diffuser
Definition · 1st Year
Reference
Terminal velocity
Definition · 1st Year
Reference
Throw
Definition · 1st Year
Reference
Transfer grille
Definition · 1st Year