Active ridge vent
Adjustable air outlet nozzle for automobile heating and venting
Adjustable ball valve
Air control apparatus for forced air central air conditioning sy
Air control damper assembly
Air discharge installation for the air feed into the interior sp
Air distribution device
Air flow control system
Air inlet valve for rooms
Air outlet
Air outlet device
Air valve
Air vent
Air volume damper kit and assembly
Animal enclosure with pressure controlled ventilation inlet and
Apparatus for discharging silage from a silo
Ball check valve
Ball cock
Ball cock of plastics material
Ball segment valve and ball segment valve arrangement