Established in 1969, McDonald and Lappin Engineering has developed a reputation for its expertise in Sheet Metal Fabrication, Box Section Fabrication, & Ventilation Systems.

Sheet Metal Fabrication

With CAD and pattern development software, we can provide an efficient and accurate transition from design to final manufacture for a wide variety of sheet metal fabrications.

Box Section Fabrication

Structural manufacturing using a wide variety of box section, flat bar, and angle.

Ventilation Systems

From clean rooms to simple supply and extract systems. All designed in accordance with CIBSE. Ductwork fabricated and installed in accordance with DW144. We also test and commission and can provide LEV surveys.