10 Ft 3/8" x 5/8" Split AC Installation Kit
The DABUND 10 ft 3/8" x 5/8" Split AC Installation Kit is a complete HVAC installation package for compatible mini split air conditioners, heat pumps and split AC systems. It combines a pre-insulated copper refrigerant line set with communication cable, drain hose, wall sleeve, wall cover and other essential installation accessories.
The paired copper tubing includes one 3/8" tube and one 5/8" tube, each approximately 10 ft or 3.05 m long. The copper tubes can be supplied with factory-prepared flared ends and flare nuts to simplify connection during professional HVAC installation.
DABUND uses C12200 DHP copper tubing for air-conditioning and refrigeration applications, with ASTM B280 specifications available according to the ordered configuration. White PE and black rubber insulation options are available in multiple thicknesses for wholesalers, distributors, HVAC contractors and OEM customers.
Quick Answer: This 10 ft mini split installation kit combines a 3/8" x 5/8" insulated refrigerant line set with commonly required installation accessories in one package, helping HVAC buyers simplify sourcing and installation preparation.
Compatibility Notice: Refrigerant pipe dimensions vary by HVAC manufacturer and model. Before ordering, verify that your equipment specifically requires 3/8" and 5/8" copper tubing and check the manufacturer's requirements for piping length, flare connections, insulation and refrigerant charge.
What Is Included in the 10 Ft Split AC Installation Kit?
The standard kit combines refrigerant piping and major installation accessories into one coordinated package for compatible mini split AC installations.
10 ft / approximately 3.05 m insulated copper line set
3/8" copper refrigerant tube
5/8" copper refrigerant tube
Pre-flared copper tube ends with flare nuts
Communication / control wire cable
Drain hose
Wall sleeve and wall cover
Related mini split installation accessories
Kit contents can be customized for distributors and HVAC brands. Communication cable specifications, drain hose length, insulation material, insulation thickness, accessories and packaging can be adjusted according to order requirements.
10 Ft 3/8" x 5/8" Line Set Specifications
| Product Type | Split AC / Mini Split Installation Kit |
| Copper Tube Size | 3/8" + 5/8" |
| Metric Outside Diameter | Approximately 9.52 mm + 15.88 mm |
| Length | 10 ft / approximately 3.05 m |
| Copper Material | C12200 DHP Copper |
| Copper Tube Specification | ASTM B280 specification available |
| Connection | Pre-flared ends with flare nuts |
| Insulation | White PE / Black Rubber |
| White PE Thickness | 8 mm / 9 mm / 10 mm / 13 mm / 19 mm / 25.4 mm options |
| Black Rubber Thickness | 13 mm / 17 mm / 19 mm / 25.4 mm options |
| Typical Applications | Compatible mini split AC, heat pump and HVACR systems |
| OEM / ODM | Tube size, length, insulation, accessories, printing and packaging |
Key Features of the 3/8" x 5/8" AC Installation Kit
C12200 Copper Tubing for HVACR Applications
The refrigerant line is manufactured from C12200 DHP copper for air-conditioning and refrigeration applications. ASTM B280 tubing specifications are available according to customer and market requirements.
Paired 3/8" and 5/8" Refrigerant Tubes
The kit combines 3/8" and 5/8" outside-diameter copper tubing in one insulated line set. Depending on the HVAC equipment design, these tubes connect the indoor and outdoor units and circulate refrigerant between system components.
Factory-Prepared Flared Ends
Both copper tubes can be supplied with factory-prepared flare connections and flare nuts. Pre-flared ends reduce field preparation and provide a convenient connection solution for compatible mini split equipment.
White PE or Black Rubber Insulation
Multiple insulation configurations are available. White PE and black rubber insulation help reduce heat transfer and condensation while protecting the copper tubing during transportation, routing and HVAC operation.
Complete Installation Package
By combining the refrigerant line, communication cable, drain hose and wall accessories into one package, HVAC wholesalers and contractors can reduce separate sourcing and simplify inventory management.
OEM and Private-Label Options
DABUND provides OEM and ODM services for wholesalers, distributors and HVAC brands. Tube dimensions, length, insulation thickness, printed branding, cable specifications, accessories and packaging can be customized.

High-Purity Copper Tubing

Black Rubber Insulation

Pre-Flared Connections
Black Rubber Pipe Insulation Features
Closed-cell black rubber insulation is designed to help reduce thermal transfer and moisture penetration around the refrigerant piping. Different insulation thicknesses can be selected according to the installation environment and project requirements.
Closed-cell structure helps reduce moisture penetration.
Low thermal conductivity helps limit heat transfer.
Insulation helps control condensation on cold refrigerant tubing.
UV-resistant insulation options are available for exposed applications.
Selected specifications support temperatures from approximately -40°C to 120°C.
Multiple thicknesses are available for different HVAC applications.

Thermal Insulation
The high-density closed-cell structure helps reduce heat transfer between the refrigerant tubing and the surrounding environment, supporting stable operating conditions in properly designed HVAC systems.
Condensation Control
The insulation layer also functions as a moisture barrier. When correctly selected and installed, it helps reduce condensation on cold refrigerant piping.
Flame-Retardant and UV-Resistant Options
DABUND offers insulation specifications with testing related to ASTM E84, UL 94, ASTM D1056 and ASTM G21. Buyers should confirm the required insulation grade and applicable test documentation before placing an order.
10 Ft AC Installation Kit for Wholesalers and Distributors
The 10 ft 3/8" x 5/8" Split AC Installation Kit is suitable for B2B sourcing by HVAC wholesalers, importers, distributors, contractors, project suppliers and private-label brands that need an integrated refrigerant piping and installation accessory package.
The shorter 10 ft configuration is useful for compatible installations where the indoor and outdoor equipment are positioned relatively close together. However, installers must always respect the minimum and maximum piping-length requirements specified by the equipment manufacturer.
For volume orders, DABUND can customize refrigerant tube dimensions, line length, insulation material, insulation thickness, communication cable, drain hose, wall accessories, branding and export packaging.

Available Split AC Installation Kit Sizes
DABUND manufactures multiple copper tube combinations, installation-kit lengths and insulation thicknesses for different HVAC equipment and market requirements.
| Size | Available Length | Black Rubber Insulation | Flame-Resistant Options |
| 1/4 + 3/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/4 + 1/2 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/4 + 5/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 5/8 | 10 ft / 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 3/4 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 1/2 + 3/4 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
| 3/8 + 7/8 | 3m / 4m / 5m / 7m / 10m | 8mm / 9mm / 10mm / 13mm / 19mm / 25.4mm | M1 / B1 |
Is a 3/8" x 5/8" Line Set Compatible With My Mini Split?
A 3/8" x 5/8" line set is used by certain mini split air conditioners, heat pumps and other HVAC systems. However, refrigerant tube dimensions should not be selected only according to BTU rating or nominal tonnage.
Before purchasing this installation kit, confirm that the equipment specifically requires 3/8" and 5/8" outside-diameter refrigerant tubing. The metric outside diameters are approximately 9.52 mm and 15.88 mm.
Also verify the permitted minimum and maximum piping length, maximum vertical separation, flare dimensions, insulation requirements, number of bends and any additional refrigerant charge specified by the equipment manufacturer.
Refrigerant piping, pressure testing, evacuation, electrical connection and refrigerant charging should be performed by qualified HVAC personnel in accordance with local regulations and equipment manufacturer instructions.
OEM Split AC Installation Kit Manufacturer
DABUND has manufactured insulated copper tubing, mini split line sets and HVAC installation accessories since 2008. The company supplies complete installation-kit solutions for wholesalers, distributors, importers, contractors and private-label HVAC brands.
Available OEM and ODM services include:
Customized copper tube combinations
Customized refrigerant line lengths
White PE or black rubber insulation
Customized insulation thickness
Company logo and specification printing
Customized communication cable
Customized drain hose
Wall sleeve and wall cover configurations
Private-label cartons and retail packaging
Bulk supply for HVAC distributors and brands
Why Choose DABUND Split AC Installation Kits?
DABUND focuses on insulated copper tubing, mini split refrigerant line sets and HVAC installation accessories. Integrated production helps B2B buyers source copper tubing, insulation and related installation components through one supplier.
HVAC product manufacturing experience since 2008
C12200 copper tubing for air-conditioning and refrigeration applications
ASTM B280 tubing specifications available
White PE and black rubber insulation options
Multiple insulation thickness options
Complete split AC installation kit configurations
OEM and ODM customization
Sample support for product evaluation
Bulk supply for wholesalers and distributors
DABUND Factory
DABUND manufactures insulated copper pipes, mini split line sets, aluminum pipes and HVAC installation accessories for international markets.

SGS Testing and Insulation Standards
DABUND offers insulation specifications with testing related to ASTM E84, UL 94, ASTM D1056 and ASTM G21. Buyers should confirm the specific material specification and test documentation required for their destination market.

International HVAC Exhibitions
DABUND participates in international exhibitions to present mini split line sets, insulated copper tubing and HVAC installation accessories to distributors, contractors, importers and industry buyers.

Frequently Asked Questions
What is included in the 10 ft 3/8" x 5/8" Split AC Installation Kit?
The standard kit includes a 10 ft insulated 3/8" + 5/8" copper line set, communication cable, drain hose, wall sleeve, wall cover and related AC installation accessories. Exact kit contents can be customized.
What does 3/8" x 5/8" mean on a mini split line set?
The dimensions indicate the outside diameters of the two copper refrigerant tubes. They are approximately 9.52 mm and 15.88 mm in metric dimensions.
How long is this AC line set?
Both refrigerant tubes are approximately 10 ft, or 3.05 m, long.
Is a 3/8" x 5/8" line set suitable for every mini split?
No. Refrigerant pipe dimensions vary by equipment manufacturer and model. Always verify that the indoor and outdoor unit combination specifically requires 3/8" x 5/8" tubing before ordering.
Are the copper tubes supplied pre-flared?
Yes. The copper tube ends can be supplied with factory-prepared flares and flare nuts for connection to compatible mini split equipment.
What copper material is used?
DABUND uses C12200 DHP copper tubing for HVAC and refrigeration applications. ASTM B280 specifications are available according to the ordered product configuration.
What insulation options are available?
White PE and black rubber insulation are available in multiple thicknesses. The appropriate insulation specification can be selected according to the installation environment, climate and target-market requirements.
Can DABUND customize the installation kit?
Yes. DABUND provides OEM and ODM services for copper tube dimensions, length, insulation, communication cable, drain hose, wall accessories, printed branding and packaging.
Can my company logo be printed on the product?
Yes. Logo printing, specification printing and private-label packaging are available for OEM and bulk orders.
Can I get samples before placing a bulk order?
Yes. DABUND provides sample support for product evaluation. You can visit the free sample page for more information.
What payment terms are available?
Available payment methods can include T/T, L/C at sight and credit card. Final terms depend on the order value and commercial agreement.
What delivery terms are available?
Available international trade terms can include EXW, FOB, CFR and CIF. Buyers can confirm the required Incoterm when requesting a quotation.
What is the typical production lead time?
Standard production lead time is typically around 15–20 days according to the current product information. Actual lead time depends on order quantity, customization requirements, material availability and production schedule.