What are Overhead Concealed door closer?
Overhead Concealed door closers are used to provide a more aesthetic look to the opening.
Concealed in either the frame or the door
Offer the ability to be adjusted to maintain co...
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Does the 3130 and 3030 closer use the same cylinder?
No the cylinders are not the same. Internally there are differences.
So the cylinders cannot be interchanged as you won't get proper operation or regulation.
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