Wiska Combi Series Polypropylene Junction Boxes – Wiska 61779, The Wiska Combi 607/5/2xKRM25/20 BK is an ideal junction box for inside and outside applications. With their unique design and highest quality, they have met the most demanding installer requirements for years: The Combi 607/5/2xKRM25/20 BK junction box series is an original in every respect. Wiska 61779 Junction Box 110x110x66mm Black IP66/67