ILSN / ILSNL take-offs are male-ended fittings to be inserted directly into round SPIRAL or plain ducts. The 12.7x12.7 mm mesh installed at the take-off end secures the air exhaust against birds, large insects, leaves or debris. This is the simplest form of ductwork termination with a minimum air intake/exhaust flow resistance. ILSN units are available with a female end on request for connection with a ventilation bend.
ILSN — Angle take-off with a mesh and without a gasket
ILSNL — Angle take-off with a mesh and an EPDM gasket
