Home Technical designs D408 Institutional Pour Flush Latrine Design and BoQ D-408 Institutional Pour Flush Toilet.dwg D408 Institutional Latrine (Pour Flush) with Septic Tank BOQ.xlsx D408-2025A Institutional Pour Flush Latrine (Septic Tank and Drainfield) Design and BoQ (UNHCR, 2025).pdf Previous D407 Institutional Latrine (Desludgeable) Design and BoQ Next D409 Household Pour Flush Toilet and Bathing Unit Design and BoQ