Ekena Millwork CR39ME 39 3/8"OD x 35 1/2"ID x 2"W x 7/8"P Medway Ceiling Ring (1/4 of complete circle)
Ekena Millwork CRK47MO $88.52 - 47 1/2"OD x 39 1/4"ID x 4 1/8"W x 7/8"P Monique Ceiling Ring Kit
Remote Sensing | Free Full-Text | Monitoring and Analyzing the Effectiveness of the Effective Refuge Area of Emergency Shelters by Using Remote Sensing: A Case Study of Beijing’s Fifth Ring Road