Adjustable air distribution apparatus

Adjustable chimney cover

Adjustable chimney cover

Adjustable damper for airflow systems

Adjustable device for exhaustion and/or supply of gas

Adjustable duct assembly for fume and dust removal

Adjustable exhauster arm assembly

Adjustable filtered roof ridge ventilator

Adjustable floor-mounted air outlet vent

Adjustable local extraction device

Adjustable pitch roof vent with accordion-shaped end plug

Adjustable register incorporating a toggle-joint mechanism to mo

Adjustable roof jack with flexible boot

Adjustable roof ventilator jack

Adjustable terminal basket with light weight, horizontal...

Adjustable vent

Adjustable width louver

Aeration structure in buildings

Aerodynamic rain-hat for vehicle air intake

Aerodynamic suction ventilator