ɪn wˈʊdwɜːkɪŋ ɔːɹ lˈʌmbɚ tˈɜːmz ˈɛs tˈuː z ˈiːkwəlz sˈɜːfɪst tˈuː sˈaɪdz, wˌaɪl ˈɛs θɹˈiː z ˈiːkwəlz sˈɜːfɪst θɹˈiː sˈaɪdz ænd ˈɛs fˈoːɹ z ˈiːkwəlz sˈɜːfɪst fˈoːɹ sˈaɪdz
In woodworking or lumber terms S2S= surfaced two sides, while S3S = surfaced three sides and s4s = surfaced four sides