You should never punch a hole into an expansion joint.
US Bellows is a Standards Subscriber | Exp: Dec 31, 2026 | See ejma.org to check verification process
Celebrating 25 years of EJMA membership
US Bellows is a Standards Subscriber | Exp: Dec 31, 2026 | See ejma.org to check verification process
Celebrating 25 years of EJMA membership
You should never punch a hole into an expansion joint.
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