2 in 1 deodorant floor drain strainer strainer extension cast iron threaded frank pattern 7 floor drains with zurn elkay z400 u adjule type u 8152705 watts a6 1 6in rd nb strainer drain height extension kit 13 3375 stainless steel round floor drain for snap in drain strainer adjule floor 2 x 3 pvc shower drain with 2 pvc extend a drain cast iron round black strainer drain hub funnel strainer extension