Color classification
High-spread positive opening (no bottom plate) box bed Y211B09
High-spread positive opening (with bottom plate) box bed Y211B09
High spread side open (no bottom plate) box bed Y211B09
High spread side open (with bottom plate) box bed Y211B09
Low spread side open (no bottom plate) box bed Y211B10
Low spread side open (with bottom plate) box bed Y211B10
High-spread side opening (no bottom plate) box bed + mattress (3.15in thick J76)Y211B09
Low-lying side open (no bottom plate) box bed + mattress (8.66in thick J56)Y211B10
The size option is the inner diameter, and the actual occupied space is calculated as the outer diameter.