Diy Folding Patio Doors . With the proper type of care and maintenance, folding glass patio doors can last you for years. First, make a plan, and then build the frame, install the siding at the end. Glazed Golden Oak LH External Folding Patio Door set, (H)2094mm (W from www.diy.com First, make a plan, and then build the frame, install the siding at the end. Our standard sized nuvu bifold patio doors start as a three door set at 1800mm wide and go all the way up to a six door set at a massive 4800mm wide, all sets are 2100mm high, we also. Specifically bifold doors with cane in the middle!