Five absorber designs are discussed in this section, denoted Absorber 1, 2A, 2B, 3, and 3S. Absorber 1 is the design developed in the Mustang FEED. Absorbers 2A and 2B are alternative designs which were not included in the Mustang FEED report, but were designed for the same application. Absorber 3 is the design developed in the Panda FEED. Absorber 3S is a scaled cost estimate developed in this paper and represents a scaling of Absorber 3 to the same cross-section area and packed volume as Absorber 1. Key design parameters are summarized in Table . While both FEEDs in question use two absorbers in parallel, in this section all parameters and costs are reported for one absorber. These estimates were developed approximately between April and October 2021 and represent nominal dollars (i.e., without adjustment for inflation). The site basis is West Texas for Absorbers 1, 2A, and 2B and Sherman, TX for Absorber 3.