The connection hole size is 25mm, suitable for most air conditioners. Simple DIY is provided if this drain hose connector does not match your condensate hole. It is a simple and effective part for draining condensate, and the special rubber ring is used to prevent leakage. Effective in preventing condensate. leakage, will not make a leak in your home. Universal elbow air conditioning drainage hose connector, wide compatibility. Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience. Practical connector for drain hose, drain leak efficiently. This drain hose adapter is suitable for mini units and window AC unit. Features - Color: White - Material: plastic - Exquisite workmanship, reasonable structure, professional and practical, can bring you convenience. - Convenient connector for drain hose, drain leakage efficiently. - This drain hose adapter is suitable for mini units and window AC unit. - Universal elbow air conditioning drainage hose connector, wide compatibility. - Effective in the prevention of leak, wont cause a leak in your home. Package Including 3 x AC unit drain hose adapters