Oak Thresholds Oak thresholds provide an aesthetic solution to residential threshold applications. Natural oak also provides thermal qualities in extreme weather environments. Tan colored replacement vinyl for oak vinyl top thresholds is PV83TN. Pemko 218OAK Oak Threshold Pemko 219OAK Oak Threshold Pemko 2300W Residential Saddle Threshold Pemko 2350W Residential Saddle Threshold Pemko 2500W Seam Binding