What Is a Flowbar (Hidden Type Slot Diffuser)? Specs and How to Specify One

A flowbar (hidden type slot diffuser) is built to disappear into a ceiling shadow gap or reveal detail, supplying air with almost no visible fixture. Specs, applications, and how to specify one.

What Is a Trimless Slot Diffuser? Specs and How to Specify One

A trimless slot diffuser has no visible metal frame — it plasters directly into the ceiling finish, unlike a flowbar which sits in a reveal detail. Specs, applications, and how to specify one.

What Is a Backdraft Damper? Specs and How to Specify One

A backdraft damper opens with airflow and closes automatically under gravity or spring tension to stop reverse flow, without needing power or a control signal. Specs, applications, and how to specify one.

What Is an Industrial Control Damper? Specs and How to Specify One

An industrial control damper is built for heavier-duty process airflow regulation than standard comfort HVAC dampers, handling wider temperature and pressure ranges. Specs, applications, and how to specify one.

What Is a Butterfly Collar Damper? Specs and How to Specify One

A butterfly collar damper uses a single flat disc pivoting on a central shaft, built into a round duct collar for compact airflow regulation at branch takeoffs and diffuser necks. Specs, applications, and how to specify one.

What Is a Double Skin Eyeball Type Jet Nozzle? Specs and How to Specify One

A double skin eyeball type jet nozzle has a movable outer shroud that swivels like an eyeball, letting the throw direction be adjusted after installation. Specs, applications, and how to specify one.

What Is a Single Skin Spot Type Jet Nozzle? Specs and How to Specify One

A single skin spot type jet nozzle uses a fixed, simple-shell design to direct a concentrated jet of air at a specific spot, rather than a wide sweep. Specs, applications, and how to specify one.

What Is a Pan Diffuser? Specs and How to Specify One

A pan diffuser uses a shallow pan-shaped face to spread supply air in a wide, gentle pattern, suited to lower ceiling heights and lower air volumes. Specs, applications, and how to specify one.

What Is a Swirl Diffuser? Specs and How to Specify One

A swirl diffuser uses angled fixed vanes to induce a spinning airflow pattern, pulling in room air for fast mixing rather than a straight throw. Specs, applications, and how to specify one.

What Is a Circular Diffuser? Specs and How to Specify One

A circular diffuser distributes supply air in a symmetrical radial pattern from a round duct connection, without needing a square-to-round transition. Specs, applications, and how to specify one.

What Is a Round Plaque Diffuser? Specs and How to Specify One

A round plaque diffuser combines the plaque diffuser's flush, no-pattern face with a circular shape instead of square. Specs, applications, and how to specify one.

What Is a Plaque Diffuser? Specs and How to Specify One

A plaque diffuser uses a flat, solid face plate rather than a grid or cone pattern, for a minimal, architectural ceiling look. Specs, applications, and how to specify one.

What Is a Grid Diffuser? Specs and How to Specify One

A grid diffuser uses a flat lattice-style face, sized to fit standard suspended ceiling grid modules. How it differs from a square diffuser and egg crate grille, plus how to specify one.

What Is a Linear Curved Grille? Specs and How to Specify One

A linear curved grille follows a curved wall or ceiling line instead of running straight, keeping the linear look on non-flat surfaces. Specs, applications, and how to specify one.

What Is a Slot Diffuser? Specs and How to Specify One

A slot diffuser actively distributes supply air across a room through an engineered throw pattern, unlike a slot grille used mainly for return or exhaust. Specs, applications, and how to specify one.