8 inch open hole 205 panel 245 air volume 120 9 inch open hole 230 panel 268 air volume 132 10 inch hole 255 panel 313 air volume 150 12 inch hole 275 panel 320 air volume 168 8 inch open hole 203 panel 250 upgrade air volume 9 inch hole 233 panel 270 upgrade air volume 12 inch hole 280 panel 326 upgrade double air volume 8 inch hole 203 panel 250 ultra thin body 10 inch hole 230 panel 300 ultra thin body 12 inch hole 280 panel 326 Slim body 8 inch open hole 203 panel 250 ball bearing 10 inch open hole 233 panel 300 ball bearing 12 inch open hole 280 panel 330 ball bearing 8 inch open hole 203 panel 250 DC frequency conversion 10 inch open hole 252 panel 300 DC frequency conversion 12 inch open hole 280 panel 326 DC frequency conversion Integrated ceiling aluminum gusset plate 300300 special silver Integrated ceiling aluminum gusset 300300 special white integrated ceiling aluminum gusset 300300 special white ultra-thin metal body Integrated ceiling aluminum gusset plate 300300 dedicated LED lighting + exhaust silver frame Integrated ceiling aluminum gusset plate 300300 dedicated LED lighting + exhaust white frame Integrated ceiling aluminum gusset plate 300300 dedicated silver Economy 20" Open hole 473 Panel 600 Air volume 420