Weather Weather-Protective
Steel or aluminum enclosures protecting the genset from rain, dust, and sun — with louvered airflow and removable access panels for service.
- Function Weather protection
- Airflow Louvered
- Access Removable panels
Power Generation · Backup Power
Sound-Attenuated
Sound-Attenuated
Generator Enclosure
Manufacturing
Build-to-print acoustic canopies for diesel and gas generator sets, with weather protection, baffled ventilation, service doors, lifting bases and sub-base provisions. Noise, airflow, structural and environmental targets remain tied to the released OEM specification and final system validation. Use the acoustic and airflow RFQ guide to define buyer-owned inputs before quotation.
✓ Drawing-defined noise targets
✓ Steel and aluminum options
✓ Ventilation and service access
OEM genset canopy
RFQ
Acoustic Target
OEM
Wind Load Input
RFQ
Material Selection
Plan
Inspection Scope
01 / Enclosure Levels
From Weather Protection to Project-Defined Acoustic Scope
Weather-protective and sound-attenuated formats can be reviewed against the released genset package. Acoustic, airflow, weather and service-access requirements must be supplied with measurement and approval responsibilities.
Weather 
Sound L1–L2 Sound-Attenuated
Enclosures with acoustic insulation and baffled louvers for a buyer-defined sound target. The OEM or responsible acoustics party validates the complete installed genset against site limits.
- Function Noise reduction
- Acoustic Insulation + baffles
- Evidence Target and test method
Critical L3 Project-Defined Acoustic Package
A higher-attenuation scope may use revised wall assemblies, approved acoustic materials and longer ventilation paths when supported by the released acoustic and airflow design.
- Function Buyer-defined attenuation
- Walls Thicker assemblies
- Approval OEM or test body
Container Walk-In / Container
Large walk-in and container-style enclosures for high-power data center and industrial gensets — with integrated sub-base fuel tank and service access.
- Scale Released package envelope
- Fuel Sub-base tank
- Use Data center, industrial
02 / Technical Capabilities
Built for Weather, Noise, and the Long Haul
The released genset package defines weather, acoustic, airflow, service and structural inputs. The following items are reviewed for the fabricated enclosure scope.
| Materials | Drawing-defined galvanized or galvanneal steel, aluminum, or other approved material and thickness |
|---|---|
| Sound Attenuation | Buyer-approved acoustic material, louver and baffle geometry; fire-property records and test responsibility defined by RFQ |
| Airflow & Cooling | Intake/exhaust louvers with water-shedding baffles, radiator-fan airflow path |
| Fuel Tank | Sub-base fuel tank provisions / lifting base integration |
| Weather Rating | Buyer-specified wind, rain, dust and seismic design inputs; OEM or engineer validates the complete installed system |
| Access | Removable panels, lockable doors, single- or multi-side service access |
| Hardware | Released-BOM latches, fasteners, hinges, seals and lifting provisions |
| Finish | Drawing-defined outdoor finish; any salt-spray method, duration and acceptance criteria are RFQ-defined and externally validated |
| Approval Boundary | Mechanical enclosure built to released OEM inputs; no UL listing, sound certification or installed-system approval is claimed* |
| Tolerances & Inspection | Drawing-defined CTQs for base, lifting, doors, louvers and equipment interfaces; sampling and record format agreed by RFQ |
| Quantity & Delivery | Prototype or repeat quantity, price breaks, packaging, destination and required delivery date confirmed in the quotation |
*We fabricate the enclosure — the sound-attenuating, weatherproof steel/aluminum structure with cooling and fuel-base provisions. The engine, generator, alternator, muffler, and controls are integrated by you or your genset assembler. Final UL 2200 listing and sound certification apply to the complete, assembled genset.
03 / Manufacturing Process
From Released Design to Fabricated Enclosure
The process route is planned around the released mechanical design. The OEM owns acoustic, airflow, lifting, fuel-system and installed-site validation.
01
Laser Cutting
Cutting of wall, roof, door, and base panels plus louver openings, cable/fuel entries, and access cutouts to your genset layout.
02
Forming & Louvers
Press-brake forming of panels and drawing-defined louver or baffle geometry, with functional interfaces controlled by the inspection plan.
03
Welding & Frame
Welded structural frame and base with drawing-defined sub-base and lifting provisions. The OEM or responsible engineer validates the complete lift.
04
Acoustic Treatment
Acoustic insulation and baffled louver assemblies installed to the sound level your site requires — the buyer-defined attenuation package.
05
Powder Coating
Pretreatment, powder specification, UV requirement and any salt-spray method or duration are buyer-defined. Evidence comes from the responsible processor or test party when included in the RFQ.
06
Assembly & QC
Hardware, door and panel fit plus drawing-defined dimensional and seal-path checks. Inspection records and export packaging are supplied when quoted.
04 / Material Options
Material Matched to Site and Climate
The OEM selects material and finish from site exposure, structural, corrosion and service-life requirements. Grade, thickness, coating and records remain drawing-defined.
Galvanized / Galvanneal Steel
A common project option when the released design defines grade, coating mass, thickness, pretreatment and finish requirements.
- Cost Quantity and specification dependent
- Strength Grade and gauge dependent
- Finish Drawing-defined
Aluminum
A lower-mass option that may be considered for humid or coastal exposure when the OEM approves the alloy, temper, joining route and finish.
- Corrosion Exposure and finish dependent
- Weight Lighter
- Use Buyer-approved applications
Stainless Hardware
Latch, hinge, fastener and coating combinations follow the approved BOM and compatibility review for the stated environment.
- Latches Released BOM
- Fasteners Released BOM
- Records Specified by RFQ
05 / Why It Matters
The Enclosure Balances Three Competing Demands
Weather, acoustic and cooling-air requirements interact. The OEM supplies system inputs and acceptance criteria; the enclosure is fabricated to the released package.
Sound In, Air Through
Acoustic baffles can add airflow resistance. Intake area, exhaust path, radiator-fan data and allowable pressure loss therefore have to be reviewed together with the sound target.
Weather and Service-Life Inputs
Louvers must admit air but shed rain; panels must seal against dust and moisture. Material and finish must follow the site exposure and OEM service-life target. The OEM owns finish qualification and installed-life validation.
Compliance Is the Requirement
Site sound limits and measurement conditions should be defined by the OEM or responsible engineer. DRAmetal does not certify installed acoustic compliance.
Structure Carries the Load
The released base can include fuel-tank and lifting provisions. Loads, calculations, lift plan and installed validation remain with the OEM or responsible engineer.
RFQ Input Matrix
Generator Enclosure RFQ Inputs and Evidence
These inputs connect the buyer's complete-system design to the fabricated enclosure. Missing values should be recorded as open items, not replaced by assumed ratings.
| RFQ input | Manufacturing decision it controls | Acceptance evidence |
|---|---|---|
| Acoustic target | Wall build-up, lining, baffle and louver geometry | Target level, load condition, measurement position, method and responsible test party |
| Airflow and heat rejection | Intake and exhaust free area, radiator path and restriction-sensitive geometry | Required airflow, fan or radiator data, heat load and allowable pressure loss |
| Service access | Door swing, removable panels, hardware and component-removal envelope | Service-clearance drawing, access sequence and approved latch or hinge BOM |
| Site exposure | Material, drainage, seals, finish and water-shedding details | Environment, finish specification, inspection method and maintenance boundary |
| Structure and logistics | Base, lifting points, transport splits, anchors and handling features | Package mass, load cases, lift plan, shipment envelope and responsible engineer approval |
| Inspection records | Datums, CTQs, sampling, gauges and report format | Released inspection plan and buyer-approved acceptance criteria |
Customer Project
Generator-Room Baffles: Noise and Ventilation Balance
Materials, fabrication decisions and results for an anonymous customer project.
Component reference image
The Customer Challenge
The room exceeded noise limits, but restricting airflow caused generator temperature rise and load reduction.
Project Measurements & Details
≥25 dB(A)Noise reduction
≥0.8 m²Intake area
≥2,000 kWGenerator power
Results apply to the project configuration described on the linked page.
Read the Customer Project → 07 / Why Choose Us
Genset Enclosure Supplier Controls to Review
01
Acoustic interface review
Buyer-defined baffles, louvers, acoustic materials and airflow paths are reviewed for manufacturability against the released package.
02
Three sound levels
Weather-protective through project-defined acoustic scope, with target, measurement condition and test responsibility stated in the RFQ.
03
Weatherproof build
Water-shedding louvers, sealed panels, and a drawing-defined finish for the stated site exposure. The buyer owns corrosion and service-life validation.
04
Fuel base & lifting
Drawing-defined sub-base and lifting provisions, with complete-system calculations and lift approval retained by the OEM.
05
Wind & seismic
Wind and seismic inputs must be supplied by the buyer or responsible engineer. We fabricate to the released structure; they own calculations and final validation.
06
Envelope defined by RFQ
Enclosure size, generator package, service clearance, transport split and assembly scope are reviewed before production commitment.
08 / Related
Explore More
09 / FAQ
Generator Enclosure FAQ
Do you build complete generators or just enclosures?
We fabricate the enclosure — the sound-attenuating, weatherproof steel/aluminum structure with louvers, acoustic treatment, cooling airflow paths, and sub-base fuel tank provisions. The engine, generator, alternator, muffler, and controls are integrated by you or your genset assembler. We build the enclosure to fit your genset package.
What sound levels can you achieve?
We build from basic weather-protective through sound-attenuated to the buyer-defined target enclosures with thicker wall assemblies, specialized acoustic materials, and tuned ventilation. The RFQ must define the source data, target, operating load, measurement position and test responsibility. DRAmetal does not promise an installed sound level without that approved scope.
Steel or aluminum — which should I choose?
Material choice depends on structural loads, mass, corrosion exposure, joining and finish. Send the approved grade, thickness, coating and site requirements; proposed substitutions require written OEM approval.
Can you integrate a sub-base fuel tank?
Yes — we fabricate the enclosure with sub-base fuel tank provisions and lifting-base integration when included in the released package design. The approved load cases and lift plan determine how the completed system may be handled. The genset OEM owns lifting, fuel-system and completed-package validation and certification.
How are wind and seismic requirements handled?
Your OEM or responsible structural engineer must define wind, seismic, anchoring and lifting loads. We manufacture the released enclosure structure and inspect the agreed mechanical characteristics; no wind or seismic rating is claimed by DRAmetal.
Does DRAmetal hold a UL 2200 listing for these enclosures?
UL certification documentation is available on request for applicable products and components. Confirm whether the proposed model and listing scope meet your project's UL 2200 requirements. If the complete genset program requires a listing, the OEM or responsible test body must define the applicable construction inputs, evidence and approval route. Final listing remains with the complete assembled genset.
What should I include in a generator enclosure RFQ?
Send released 2D drawings and 3D models, genset envelope and mass, service clearances, acoustic target and measurement condition, airflow and heat inputs, structural and lifting loads, material and thickness, finish, CTQs, inspection records, quantity, packaging, destination and delivery date.
How are quantity, packaging and delivery confirmed?
Prototype and repeat-production quantities are reviewed against tooling, acoustic materials, purchased hardware, inspection and transport splits. Price breaks, packaging, Incoterm and committed delivery date are stated in the quotation.
Get Started
Need Custom Generator
Need Custom Generator
Enclosures?
Send released drawings, genset envelope and mass, service clearances, acoustic and airflow inputs, structural loads, material and thickness, finish, inspection scope, quantity, packaging, destination and required delivery date for fabrication review and quotation.
✓ RFQ-based DFM review ✓ Acoustic scope by RFQ ✓ Steel & aluminum ✓ Buyer-defined wind & seismic inputs