The best replacement for vent is teamspeak.

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★★★★  b vent
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Your alternative for vent is not listed? Suggest!
Speaking about vent, one probably shouldn't forget about soffit vents.

Other search terms related to vent and their ratings are:
★★★★★ soffit vents
★★★★ trach
★★★★ flame arrestor
★★★ soffit
★★★ ridge vent
★★ gable vents
★★ hood
★ check valve
★ stack
★ g15
★ heater
attic fan
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Google Trends

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vent
teamspeak
b vent