Fernco DC115 Drain Coupling 115 x 100mm (Dia x W) , sometimes referred to as couplers, are simple, easy to use drainage pipe connectors. Drain Couplings are designed to connect two pipes with the same or similar (within 10mm) outside diameter.
Fernco Adaptor Coupling AC4000 121-136/110-121mm, sometimes referred to as reducer couplings, are designed to connect unadopted drainage pipes with different outside diameters – connecting larger drainage pipes to smaller drainage pipes and vice versa.
Fernco Adaptor Coupling AC6000 180-200 /160-180mm, sometimes referred to as reducer couplings, are designed to connect unadopted drainage pipes with different outside diameters – connecting larger drainage pipes to smaller drainage pipes and vice versa.