Where can this louver be used?

It is suitable for equipment rooms, residential buildings, hotels, supermarkets, and other places requiring ventilation with rain protection.

Does the louver come with an insect screen?

The parameter table does not specify an insect screen. Please check product options or contact seller for screen availability.

Round Aluminum Louver Outer 550mm Hole 500mm Inner 490mm 4cm Depth Side 25mm

Name: Round Aluminum Louver Outer 550mm Hole 500mm Inner 490mm 4cm Depth Side 25mm
Brand: Qingdao Chengmingde Industry and Trade Co., Ltd.
SKU: 2295952045

Shandong, ChinaQingdao Chengmingde Industry and Trade Co., Ltd.

US$5.00

10 Pieces

Sample price:US$25.00/piece.Request sample

Product profile

Customization

Available

Material

Aluminum

Usage

for Air Conditioner

Type

Flat Mouth

Venetian-Style Air Layers

Three

Installation

Outdoor Wall-Mounted

Certification

ISO, CE

Product Name

Aluminum Rainproof Louver Vent

Function

Exhaust Air

Feature

Easy to Install

Shape

Circle

Color

Silvery

Ventilation Mode

Mechanical Ventilation

Customized

Transport Package

Carton Box or Wooden Box

Specification

Customized

Trademark

chengmingde

Origin

Qingdao

HS Code

76101000

Key features

Comprehensive Size Range: 15 sizes available from 150mm to 850mm outer diameter in 50mm increments.

Durable Material Options: Manufactured from aluminum alloy or galvanized steel for excellent corrosion resistance.

Fixed Depth Design: Consistent 4cm depth across all sizes ensures effective rain shedding.

Multi-Function Performance: Provides ventilation, rain protection, thermal insulation, and airflow regulation.

Customization Available: Offers full customization, minor customization, and flexible customization options.

Easy Installation: Designed for outdoor wall mounting with a 25mm side flange width.

Certified Quality: Meets ISO and CE certification standards for safety and reliability.

OEM/ODM Services: Professional production base supports tailored specifications and dimensions.

Company profile

Qingdao Chengmingde Industry and Trade Co., Ltd.

Shandong, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 4 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤0.13h

AI-Powered supplier vetting

SummaryQingdao Chengmingde Industry and Trade Co., Ltd. is a China-based trading company established in 2022 with two employees and a valid import/export license. It provides 3D software design and broad customization services, including sample-based, design-based, full, minor, and flexible customization, and also offers ODM services. However, it is explicitly not classified as a professional technical supplier, reported no new products in the past year, and has no SDK or known OEM service for popular brands. Finished products are checked by packing staff, while corrective and preventive action procedures or records are absent. The supplier has no overseas warehouse, showroom, overseas agent or branch, or offline trade-show participation. The provided financial records show zero reported operating revenue and other listed financial indicators for the stated periods, so financial credibility cannot be established from the available evidence.

Supplier typeThe supplier is identified as a limited trading company located in Qingdao, Shandong, China, rather than a professional technical supplier. Its stated business scope includes technical promotion, information-system operation and maintenance, appliance installation, fire-fighting and security equipment sales, and metal-product manufacturing through branches.

CertificationsThe supplier is explicitly reported to hold a valid import/export license. No other certification information is provided, so the assessment is limited to this license.

After-Sales capabilityQuality assurance is reported in quality-control processes, but there are no written corrective and preventive action procedures or records, and complaint-handling capability is recorded only as “Others.” The supplier also lacks overseas warehouses, showrooms, agents or branches, and has not participated in offline trade shows, limiting demonstrated service coverage.

Financial creditThe provided records report zero operating revenue and zero values for the listed costs, profits, cash receipts, cash inflows, cash outflows, and current ratio across the stated periods. These figures do not provide positive evidence of financial strength or operating activity, although no independent conclusion about solvency is possible from the slices alone.

R&D capabilityThe supplier provides 3D software design and ODM services, indicating some design-related capability. However, it is not identified as a professional technical supplier, reported no new products in the past year, and has no available SDK.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, flexible customization, and ODM services. It also provides 3D software design services, directly supporting a broad customization capability.

Product Q&A

Q:What sizes are available for this round rain proof louver?

The louver is available in 15 outer diameter sizes from 150mm to 850mm in 50mm increments: 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, and 850mm.

Q:What are the hole diameters and inner diameters for each size?

For each size, the hole diameter equals outer diameter minus 50mm. The inner diameter equals hole diameter minus 10mm. For example, OD150mm has hole 100mm and ID 90mm; OD850mm has hole 800mm and ID 790mm.

Q:What is the depth of the louver?

The depth of the louver is fixed at 4cm for all sizes.

Q:What is the width of the side flange?

The side flange width is 25mm (2.5cm), which is the distance from the outer edge to the hole opening on each side.

Q:What materials are available?

The louver is manufactured from either aluminum alloy or galvanized steel, both offering corrosion resistance suitable for outdoor installation.