1979 - Volume #3, Issue #2, Page #15
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Automatic Door Seal Keeps Drafts Out
"A 114 in. gap under your frontt door is like having a 9' in. hole in your wall," says Ray Syverson, president of Keystone Industries, Elkader, Iowa. To keep costly drafts out, and heat in, Keystone Industries has developed a unique automatic door seal.
When the door is closed, the seal is held tightly against th..........


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1979 - Volume #3, Issue #2