Proposed one-to-one photographic model of the grate on Tyvek

Weinreb described Exhibit 1633 as a full-scale photographic reproduction of the grate on durable Tyvek, proposed instead of a site visit to illustrate the bomb's proximity to people. Conrad raised late-disclosure and foundation objections, including whether recent barriers matched their 2013 positions. The court said the exhibit sounded likely to be admitted if a foundation were established, but did not record actual admission.