Enclosed 3D Printers are desktop machines with a closed chamber that holds heat around the part, which matters most for ABS, ASA, nylon and other materials that warp or split in open air. The guide to Active Chamber Heating vs Passive Enclosures for ABS explains when a heated chamber is worth it, and ABS vs ASA for Enclosed 3D Printing: Heat and Weather compares the two most common enclosure materials.
Before buying, check 3D Printer Build Volume, Footprint and Motion Systems to confirm the machine fits your space, and plan ventilation with Safe 3D Printing Workspace: Ventilation and Handling.
These guides are part of Baba Gee 3D Printing, a research-based publication; chamber temperatures and features are manufacturer-listed values.