Marley Optim Dwv Sanitary coupler uPVC 40mm Pearl Grey SKU: 159745 MODEL: 110.40 Error. try again later You've successfully joined the club $ 6 .66 each Available on orders $50 to $1500.More info × Mitre 10 MSAvailable at Mitre 10 MEGA and selected Mitre 10 stores. Variants Made to New Zealand standard. Features and benefits Full system available. 100% recyclable.