unvented

unvented

(ʌnˈvɛntɪd) adj1. (Mechanical Engineering) not vented; not furnished with vents2. not vented or given vent to; not emitted or allowed to escape

Thesaurus

Adj.

1.

unvented - not provided with vents unventilated - not ventilated; "stuffy unventilated rooms"