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DWV LP102-532 6 X 4 PVC DWV PIPE INCREASER-REDUCER
1 × $18.56 
1 1/4 x 1/2 GRV X THD RED 90 ELL
1 × $5.64 Subtotal: $24.20
The all new T-K4 models have an impresive max GPM of 8.0GPM ! The T-K4-OS has a built-in power venting system and was designed specifically for outdoor installations. The T-K4-OS does not require any additional Category III venting or vent caps, making installation one step easier for installers. The T-K4-IN can be installed indoor with option DV kit available.
