METRIC DESIGN GUIDE
Custom products may be specified in any size. These products are made to fit a specific
project in any measurement system and may therefore be specified in round metric sizes.
Specific firms which are able to make these products are listed later in this document.
Aluminum curtainwall systems.
Precast facade systems.
Not all dimensions of custom products will change. For example, while the length and
width of curtainwall panels can be specified in round metric sizes, the cross-section of the
extrusion does not need to change for construction. The dimensions of the cross-section
can be a mathematical conversion or any number the industry decides to name the product.
This also applies to window systems or ceiling grid systems where length and width or
height are critical and the section dimensions are not.
Modular products may be slightly different sizes in metric projects. The size of the product
has been modified in order to be efficiently utilized in a metric project. A handful of
currently used building products may undergo hard conversion to fit a round metric
Examples of products that may be physically changed:
Suspended ceiling tiles and grids.
Fluorescent lighting fixtures (lay-in type only).
Air diffusers and grilles (lay-in type only).
Brick and CMU (see Architectural/Masonry for contractor options).
Drywall. (see Architectural/General section for contractor options).
Raised access flooring.