Up To Date 45+ Veranda Bifold Doors. Garden room house thin framed sliding doors. Alibaba.com offers 1,024 veranda bifold doors products. Minimal windows sliding door system was perfect for this central courtyard as the thin. Show a step by step how to on installing bifold doors. Veranda Bifold Doors - Bifold Doors Veranda Bifold Doors Installation Our external bifolding doors will seamlessly connect your inside space to the outside.