Formed Louver Geometry
Blade pitch, open area, drainage direction and frame stiffness are reviewed around airflow and weather exposure.
OEM Ventilation and Louver Assemblies Custom Sheet
Custom Sheet
Metal Louvers
Built to Drawing
Custom louvered panels, ventilation grilles, rain hood louvers and filtered vent assemblies for enclosures, HVAC equipment, generator cabinets and industrial machinery. We control airflow opening, water shed, blade pitch, finish and protected packout.
✓ Build-to-print scope
✓ Inspection by RFQ
✓ OEM approval boundary
RFQ Project-defined
RFQ
Example order size
Drawing
Critical dimensions
Plan
Inspection scope
OEM
Final approval
01 / What We Fabricate
Louver and Grille Assemblies Built for Airflow and Protection
Louvers and vent grilles need to move air while controlling water, dust, debris, finish wear and installation fit. We manufacture them around blade pitch, open area, mesh, filters, gasket channels and final equipment assembly.
Punched Grilles and Mesh
Perforated patterns, mesh retainers and filter frames are built around airflow, debris control and cleaning access.
Weather and Filter Options
Rain hoods, drip edges, gasket channels and removable filters can be integrated into the same vent assembly.
Finish-Safe Packaging
Powder coated and stainless louver faces are packed with separators to protect edges and visible surfaces.
Our scope: louvered sheet metal vents and grille assemblies
We fabricate the louver geometry, grille patterns, mesh retainers, filter frames, finish and packout. Your team defines airflow targets, environmental exposure and final equipment validation.
02 / Louver & Grille Types
Ventilation Components for OEM Equipment
We support vent programs where airflow, weather protection, corrosion resistance and cosmetic appearance all matter to the final enclosure.
Louvers Fixed Louver Panels
Formed louver panels with repeated blades, flanged frames and mounting holes for enclosures and equipment cabinets.
- Features Formed blades and frames
- Materials Galvanized / aluminum
- Use Intake and exhaust vents
Grilles Ventilation Grilles
Punched, perforated and slotted vent grilles with frame lips, screw holes and optional mesh backing.
- Patterns Slots, holes, perforations
- Finish Powder coat / stainless
- QC Open area and burr checks
Weather Rain Hood Louvers
Weatherproof vent hoods with drip edges, mounting flanges and formed louver blades for outdoor cabinets.
- Features Drip edge and hood depth
- Materials Galvanized / stainless
- Use Outdoor equipment
Filtered Filtered and Acoustic Vents
Vent assemblies with mesh, removable filters, gasket channels or acoustic backing for controlled airflow.
- Options Mesh, filter, gasket
- Control Fit and finish checks
- Packout Scratch protected
03 / Technical Capabilities
Typical Louver and Vent Grille Specification
| Materials | Galvanized steel, aluminum, stainless steel, cold-rolled steel, perforated sheet and stainless mesh |
|---|---|
| Processes | Laser cutting, punching, louver forming, press brake forming, spot welding, mesh assembly, deburring and finishing |
| Part features | Formed blades, punched slots, perforations, mesh retainers, filter frames, drip edges, gasket channels and mounting holes |
| Finishes | Powder coating, anodizing, passivation, zinc plating, brushed stainless and protective film |
| Quality controls | First article inspection, blade pitch checks, open area review, burr checks, coating inspection and protected packout |
04 / Manufacturing Process
From Airflow Requirement to Finished Vent Assembly
01
Airflow and Exposure Review
Review open area, water shed, debris control, gasket needs, finish exposure and installation method.
02
Pattern and Louver Forming
Punch slots, perforations or louver blades, then form frames, drip edges and mounting flanges.
03
Mesh, Filter or Hood Assembly
Install mesh, filter retainers, acoustic backing or rain hood features where the drawing requires them.
04
Deburring and Surface Prep
Control edges, blade burrs, visible faces and coating masks before finish.
05
Finish and Inspection
Check coating quality, frame fit, blade consistency, mesh retention and cosmetic surfaces.
06
Protected Packout
Pack vent assemblies by SKU, finish and installation kit with separators for visible louver faces.
05 / Why It Matters
What Makes a Vent Program Reliable
Vent parts sit at the boundary between equipment and environment. Airflow, water control, finish durability and installation fit need to work together.
Airflow Open Area
Slot and louver geometry must provide enough open area without weakening the frame or exposing internal parts.
Weather Protection
Outdoor vents need drip edges, blade direction and gasket details that reduce water ingress risk.
Visible Finish
Louvers are often visible, so powder coat quality and edge protection matter during packaging and installation.
Filter and Mesh Fit
Removable filters, mesh backing and retainers must stay serviceable without rattling or blocking airflow.
Customer Project
Equipment Louvers: Rain Protection and Serviceable Mesh
Materials, fabrication decisions and results for an anonymous customer project.
Component reference image
The Customer Challenge
Rain entered through the louvers, airflow resistance was high and the insect screen clogged during use.
Project Measurements & Details
IPX4Water protection
≤10 PaAirflow resistance
≤1 mmMesh aperture
Results apply to the project configuration described on the linked page.
Explore Customer Projects → 07 / Why Choose Us
Why OEMs Trust DRAmetal for Louvers and Vent Grilles
01
Airflow-aware DFM
We review blade pitch, open area, mesh, filter access and rain exposure before release.
02
Punching and forming control
Louver patterns, perforations and flanges are built with repeatable forming and burr control.
03
Finish-ready assembly
Powder coat, anodizing, passivation and masking are planned around visible faces and edges.
04
Packout for visible parts
Vent assemblies ship with surface protection and SKU separation for line-side installation.
08 / Related
Related Fabricated Products
09 / FAQ
Custom Sheet Metal Louvers and Vent Grilles FAQ
Can you make both louvered panels and perforated grilles?
Yes. We can manufacture formed louver panels, punched grilles, perforated vents, mesh-backed vents, rain hoods and filtered vent assemblies.
Can you support outdoor vent assemblies?
Yes. Galvanized steel, stainless steel, aluminum, powder coating, drip edges, gasket channels and mesh options can be specified for outdoor equipment.
Can you help review open area and manufacturability?
Yes. We can review louver pitch, open area, hole pattern, flange design and finish risk before quoting production.
Get Started Need Louvers or Vents
Need Louvers or Vents
Built to Drawing?
Send your vent drawing, airflow notes, material, finish, mesh or filter requirement and annual quantity. Our engineering team will review manufacturability and quote the right production path.