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A vent adapter from Grainger can help you to maximize your ventilation system. Help connect ducts to each other with a round duct connector. You can install ventilators in areas remote from air intake with an inline adapter kit. Help reduce your energy consumption with a fluorescent-lighted grille kit. Use a transition duct to help connect a round duct to a rectangular duct. Put it all together with duct mounting clamps in just the size you need. Get all these durable duct connector, galvanized steel duct connectors and vent adapter items when you shop Grainger!