Duck tape is a brand of duct tape, but I don't think the name is the
OP's problem. I think the problem is that he tried a half-assed search
in a store instead of doing a full-assed search. It's amazing how much
stuff I don't find when I don't look for it.
Not sure why googling "aluminum tape vent" didn't occur to him...
Oh, just for a bit of education
From the Wikipedia on Duct tape
"The origins of the name "duct tape" are the subject of some disagreement.
One view, popular among many Internet Q&A sites, is that older
references to a different fabric product called duck tape, which the OED
states perhaps was altered to create the origin of duct tape, in combination
with a popular tale about WWII Army soldiers comparing the invention's
waterproof qualities to that of a duck, proves that the original name of the
product was, coincidentally, duck tape. This view is summarized most notably
in a New York Times article by etymologist William Safire in March of 2003.
The other view is a more conservative etymology, noting that documented use
of the word "duct" to describe the product in question predates any
documented use of the word "duck" to describe the same, by many years, and
that there is no evidence supporting the WWII story or that the product got
its name by altering the name of a different product. This view also
accepts the simpler explanation that people have just confused the
effectively identical pronunciation of two similar but unrelated products
through the process of elision, and the rest of the "duck" etymology is
folklore or fabrication. This view was summarized most notably in a Boston
Globe article by etymologist Jan Freeman, also in March of 2003."
It amazes me that people seek folkloric explanations instead of the
obvious. It also amazes me that there are people willing to explain
things they don't know. Luckily we have writers willing to obfuscate
instead of clarify and use words like elision. .
The tape in question, duct tape, as the vast preponderance of users and
manufacturers call it, is a fabric based tape. I'm sure you've heard
of cotton duck fabric, well, that's where duct tape got its colorful
vernacular name, (cotton) duck tape. There is only one manufacturer
that is allowed to call their duct tape Duck tape as Duck is a
Cotton duck (from Dutch doek,"linen canvas"), also simply duck,
sometimes duck cloth or duck canvas is a heavy cotton fabric. There is
also linen duck, which is less often used.
Duck is classified according to weight in a numerical system, with
grade 1 the heaviest and grade 10 the lightest variety. Besides this,
traditional names exist, which are rarely used nowadays.
Duck is used in a wide range of applications, from sneakers over tents
You said it, it is different, duct tape dries out, seperates, and
I've found only cheap HVAC guys use duct tape, and I've been yelled
out in the past for even suggesting it's use. Let the DIY'ers use it.
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