Protecting HVAC Intakes From Sand: Louver, Filter and Upkeep
Protecting an HVAC intake from sand takes layers: a sand trap louver for coarse sand, filters for fine dust, and regular checks of both. How the layers fit together.
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How to Specify a Sand Trap Louver: Size, Materials and Schedule
To specify a sand trap louver, give the exact opening size, design airflow, type and model, and a material and coating suited to the site. What to size, choose and put on the schedule.
Sand Trap Louver vs Weather Louver: Which Does Your Intake Need?
A sand trap louver and a weather louver sit in the same wall opening but solve different problems: one keeps out driving rain, the other keeps out wind-driven sand. How to choose.
Air Distribution Design: How to Size Grilles, Diffusers and Ducts
Air distribution design turns a room's load into airflow, then sizes the terminals, ducts and dampers that carry it. A step-by-step sequence for MEP consultants and contractors.
HVAC Ductwork Accessories: Plenum Boxes, Flex Duct, Access Doors, Exhaust Valves & VAV Devices
Plenum boxes, flexible duct, access doors, exhaust valves, and VAV devices round out an HVAC air distribution system beyond the visible grilles and diffusers. Specs, applications, and how to specify each.
What Is an Aluminium Collar Damper? Specs and How to Specify One
An aluminium collar damper is a lightweight, corrosion-resistant single-blade damper built into a round duct collar, suited to standard comfort HVAC branch connections. Specs, applications, and how to specify one.
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.