Gree Slim Duct min/max capacity

Is it normal for the 24K BTU to have a lower min BTU compared to the 18K version of the slim duct?Paperwork found on the GREE website:https://www.greecomfort.com/assets/our-products/vireo-gen3/documents/vireo-gen3-submittal-slim-duct-24mbh-230v-a.pdfhttps://www.greecomfort.com/assets/our-products/vireo-gen3/documents/vireo-gen3-submittal-slim-duct-18mbh-230v-a.pdf Is it normal for the 24K BTU to have a lower min BTU compared to the 18K version of the slim duct?Paperwork found on the GREE website:https://www.greecomfort.com/assets/our-products/vireo-gen3/documents/vireo-gen3-submittal-slim-duct-24mbh-230v-a.pdfhttps://www.greecomfort.com/assets/our-products/vireo-gen3/documents/vireo-gen3-submittal-slim-duct-18mbh-230v-a.pdfRead MoreGreenBuildingAdvisor