XG-DD-RD Series XG-DD-RD-180 XG-DD-RD-360 XG-DD-RD-90 × XG-DD-RD-180 Model XG-RD-180 is a semi-round 180° displacement diffuser designed for wall mounting around the perimeter of a room. Purchase Options: REQUEST A QUOTE Configure to Order Need a specific configuration? Submit a request online and get a quote from your local representative within 4 hours. REQUEST QUOTE Show All Submittals XG-DD-RD-180 – Semi-Round (180 Degree Throw) Displacement Diffuser, Wall Mount Performance XG-DD-RD-180 Performance Catalogs Diffuser Selection Flow Chart Displacement Ventilation Product Handbook Other Product Information Finish Options Warranty Warranty Statement for Air Distribution Products