What do you hang spiral ducts with?
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What do you hang spiral ducts with?
Split clips or Suspension Clips (single hangars) are the way to go. These both perform the same purpose, and can be used to attach your duct to the ceiling or a wall. Single Hangars have one point of suspension, and can fit M8 or M10 threaded rod, or just use a Hanger Bolt.
How far apart should duct hangers be?
Its best to use hanger spacing of 8′ or 10′ to maximize the span between hangers and reduce the amount of time for installing hangers. As ducts get larger or spacing between hangers increases they will require a heavier gauge hanger or a thicker hanger rod.
How can you support flexible ductwork?
- Support flex duct using straps or saddle supports or as specified by the manufacturer.
- Space supports at 4-foot intervals or closer to ensure that the flexible duct does not sag more than 1/2 inch per lineal foot between the supports.
- Place supports at each connection between flex duct and rigid metal duct.
How do you hold ductwork?
Installation Tip — Simply pull the desired length of hanger strap out of the cardboard box and cut using sheet metal snips. Nail or screw one end to your roof structure. Raise duct to desired height and bring other end of the hanger strap and attach it also to your roof structure.
How many duct hangers do I need?
But the underlying “common sense” behind those recommendations is pretty simple: have no more than two duct joints between supports. That explains the 8 to 10 feet apart recommendation when you are installing 4 and 5 foot joints of rectangular duct.
Should ductwork be off the ground?
Ideally, all ducts should be located within the conditioned space. This is typically the case for ducts that run through a dropped ceiling or soffit, or between joists, so long as the floor system sits on top of a conditioned basement or crawlspace.
How do you attach duct to ceiling vent?
Attach supply branches to ceiling outlets with straps and tape. Use either round or square ceiling vents, but make sure the round attachment collar is the same size as the outlet supply duct. Secure metal outlet vents to ceiling joists or other wood framing with screws and a screwdriver. Seal the connection with tape.
How much weight can a gripple hold?
25 – 750 lbs
Gripple hangers are load rated from 25 – 750 lbs per hanger, are pull tested, and have up to a 5:1 safety factors.
How long can you run flex duct?
5 feet
An International Association of Plumbing and Mechanical Officials committee has approved a change to the group’s Uniform Mechanical Code, limiting the use of flexible ductwork to 5 feet or shorter runs. Flex duct manufacturers oppose the limitation.
