The CSHL access blind plugs are available in galvanized steel,
stainless steel or aluminium as access closures installed
at the ends of spiral ducts or type B1 welded ducts.
EPDM gaskets provide air tightness class D, which helps reduce
air pressure losses in the ventilation system and allows using
lower-performance and more budget-friendly fans and AHUs.
One or two handles are provided (according to the diameter) to
facilitate frequent removal and plugging.
