Charlotte Pipe 6 In. Hub X 4 In. Hub Schedule 40 DWV Reducing PVC Coupling - Kibler Lumber
1 1/2 in x 1 1/2 in Fitting Pipe Size, Schedule 40, Coupling - 22FJ43|429015BC - Grainger
Amazon.com: FangKingNo10pcs 1/2" White PVC Pipe Coupling Adapter Pipe Fittings (Slip to Slip) Schedule 40 Easy to Install,and High Tensile for Home or Industrial Use (1 Pack of 10pcs) : Industrial &
Charlotte Pipe 1-1/2 in. PVC Schedule 40 S x S Coupling PVC021001400HD - The Home Depot