Are multiple sizes available? How to choose the right size?

We supply 3 standard diameters as shown in the picture, covering most common ventilation pipe specifications. You just need to measure the outer diameter of your exhaust PVC pipe or aluminum foil hose, then pick the vent cap with matching caliber. If you have special oversized pipes, we also support customized sizes for bulk orders.

Outdoor Rain Protection Round Plastic Grille for Flat Ventilation Cap

Name: Outdoor Rain Protection Round Plastic Grille for Flat Ventilation Cap
Brand: Qingdao Chengmingde Industry and Trade Co., Ltd.
SKU: 2307841695

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

US$2.00-10.00

1 Piece

Product profile

Customization

Available

Material

Stainless Steel

Usage

for Air Conditioner

Type

Flat Mouth

Venetian-Style Air Layers

Three

Installation

Outdoor Wall-Mounted

Product Name

Stainless Steel Flat Mouth Air Vent

Function

Exhaust Air

Feature

Easy to Install

Shape

Round

Transport Package

Carton Box or Wooden Box

Specification

Customized

Trademark

chengmingde

Origin

Qingdao

Key features

Durable 304 Stainless Steel: Made of food-grade 304 stainless steel with excellent rust-proof and anti-corrosion performance.

Flush Flat Wall-Mounted Design: Low-profile structure sits closely against the wall without protruding for a neat look.

Dual Barrier Protection: Integrated slanted louvers and fine metal mesh block rain, bugs, birds, and debris.

Easy DIY Installation: Simple installation requiring only a drilled hole and glass glue; no professional tools needed.

Multi-Size Compatibility: Available in standard diameters to fit PVC pipes, aluminum foil ducts, and hard tubes.

Effective Weather Resistance: Withstands long-term exposure to wind, rain, and UV sunlight without rusting or deforming.

Customization Options: Supports customization from samples, designs, and bulk orders for special oversized pipes.

Versatile Application: Ideal for kitchen range hoods, bathroom fans, fresh air systems, and engineering projects.

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: ≤0.39h

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 material is this vent cap made of? Is it suitable for outdoor installation?

It is integrally stamped from high-quality 304 stainless steel with polished finish. 304 stainless steel features excellent rust-proof, anti-corrosion and UV-resistant performance. It can withstand long-term wind and rain exposure on exterior walls, and will not rust or deform easily, perfectly fit outdoor wall mounting.

Q:What ventilation scenarios can this vent cap be used for?

It has wide application. It matches kitchen range hood exhaust pipes, bathroom exhaust fan ducts, whole-house fresh air system outlets, as well as ventilation pipes of storage rooms, machine rooms and small equipment. Multiple sizes can meet different pipe diameter demands of household and engineering projects.

Q:Will rainwater flow back into the pipe when it rains heavily?

No. The product adopts integrated slanted louver structure as the first waterproof barrier. Raindrops will slide down along the inclined shutters instead of pouring backward into the pipeline. Cooperated with the flat wall-mounted design, it greatly reduces the chance of rain infiltration even during continuous heavy rain.

Q:Can bugs, birds or leaves get into the ventilation pipe?

It comes with built-in dense fine metal mesh as secondary protection. The tiny mesh holes block mosquitoes, wasps, sparrows, mice, fallen leaves and sundries from entering and clogging the duct. It keeps smooth air exhaust while avoiding frequent pipeline cleaning.

Q:How to install this vent cap? Is professional construction required?

Installation is simple and DIY-friendly. Just drill a round wall hole matching the vent size, insert the vent body into the through-wall duct, then fill the edge gap with weatherproof glass glue for sealing. No special brackets or complex tools are needed; one person can complete installation quickly without professional workers.