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#1
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Galvanized round duct, can I substitute flex aluminum for part ofthe run?
I would like to shift some galvanized 6 inch round duct in a joist
space. I would like to splice in some 6 inch flex aluminum duct at each end so the duct could be shifted one way or the other for some hi-hat lights. Would doing so violate code or good practice? Thank you for any help. |
#2
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Galvanized round duct, can I substitute flex aluminum for part of the run?
andy everett wrote:
I would like to shift some galvanized 6 inch round duct in a joist space. I would like to splice in some 6 inch flex aluminum duct at each end so the duct could be shifted one way or the other for some hi-hat lights. Would doing so violate code or good practice? Thank you for any help. Bad practice in my opinion. No matter how you do it, it is going to case some additional restriction. To reduce the restriction and possible future problems, I suggest using a pair of elbows at each end. -- Joseph Meehan Dia 's Muire duit |
#3
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Galvanized round duct, can I substitute flex aluminum for part of the run?
"andy everett" wrote in message newsU7sh.8$dk1.5@trndny03... I would like to shift some galvanized 6 inch round duct in a joist space. I would like to splice in some 6 inch flex aluminum duct at each end so the duct could be shifted one way or the other for some hi-hat lights. Would doing so violate code or good practice? Thank you for any help. I would stick with galvanized. Flex aluminum will add some flow restriction if it's not completely expanded and look like a bad patch job. A couple six inch collars cut and crimped wouldn't be that hard. Bill |
#4
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Galvanized round duct, can I substitute flex aluminum for part of the run?
Hi Andy,
I doubt the restriction mentioned by others would really amount to much if you are just swooping around light fixtures. The drag induced by 4 elbows would probably be worse than that of the foil tube in a loop around the light fitting. By a "loop" I mean, cut an 18" long piece out of the solid duct. Attach one end of the flexible to it. Run the flexible past the fixture, then do a full loop around the fixture and attach to the other end of the solid duct. Nice big radius and quite low restriction overall. Dave |
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