Pass Door Systems (PDS) brings residential style to low U-Value, secure steel doors designed for modular and portable buildings. Historically a market leader in low U-Value solutions to meet Part L requirements, Pass Door Systems (PDS) has seen a steep rise in demand for doors with residential design elements. Where previously “flush will do” was the standard reply when asked about design requirements, the modular and portable building industry is increasingly looking for security and style. https://mpba.biz/posts/2088/pass-door-systems-pds-brings-residential-style-to-low-u-value-secure-steel-doors-designed-for-modular-and-portable-buildings