Features: Dimensions: 19" x 8.75" x 17" 8, 14, 20 Slot and ATX Models Hot Swap Power Supply Option Shock Mounted Drive Cage Vibration Clamped Boards Front Panel Keyboard Option Positive Pressure Filtered Air Five 5.25" Drive Bays - Four Front Accessible Internal 3.5" Drive Bay Front Removable, Washable Filters 2 to 6 Filtered Cooling Fans Controls and Drives Behind Locking Door Locking Drive Door Custom Design and Finishes Available Manufactured in the USA Rackmount Enclosures w/o power supplies or boards Base Part No. Type Metal Type Front Type Door Type Filter Hot Swap No. Fans No. Slots 5.25" Bays 3.5 Bays RM 19 x 8.75 x 17 System Enclosures RM5U17-8 ALUM STD LOCK WASH 2 8 5 1 RM5U17A-8 ALUM FLUSH LOCK WASH 2 8 5 1 RM5U17HS-8 ALUM STD LOCK WASH VERT 2 8 5 1 RM5U17AHS-8 ALUM FLUSH LOCK WASH VERT 2 8 5 1 RM5U17-ATX ALUM STD LOCK WASH 2 7 5 1 RM5U17A-ATX ALUM FLUSH LOCK WASH 2 7 5 1 RM5U17-14 ALUM STD LOCK WASH 2 14 5 1 RM5U17A-14 ALUM FLUSH LOCK WASH 2 14 5 1 RM 19 x 8.75 x 20 System Enclosures RM5U20-8 ALUM STD LOCK WASH 4 8 5 1 RM5U20A-8 ALUM FLUSH LOCK WASH 4 8 5 1 RM5U20HS-8 ALUM STD LOCK WASH VERT 4 8 5 1 RM5U20AHS-8 ALUM FLUSH LOCK WASH VERT 4 8 5 1 RM5U20-ATX ALUM STD LOCK WASH 4 7 5 1 RM5U20A-ATX ALUM FLUSH LOCK WASH 4 7 5 1 RM5U20-14 ALUM STD LOCK WASH 4 14 5 1 RM5U20A-14 ALUM FLUSH LOCK WASH 4 14 5 1 RM 19 x 8.75 x 20 System Enclosures RM5U24-8 ALUM STD LOCK WASH 5 8 5 3 RM5U24A-8 ALUM FLUSH LOCK WASH 5 8 5 3 RM5U24HS-8 ALUM STD LOCK WASH VERT 5 8 5 3 RM5U24AHS-8 ALUM FLUSH LOCK WASH VERT 5 8 5 3 RM5U24-ATX ALUM STD LOCK WASH 5 7 5 3 RM5U24A-ATX ALUM FLUSH LOCK WASH 5 7 5 3 RM5U24-14 ALUM STD LOCK WASH 5 14 5 3 RM5U24A-14 ALUM FLUSH LOCK WASH 5 14 5 3 RM5U24-20 ALUM STD LOCK WASH 6 20 5 0 RM5U24A-20 ALUM FLUSH LOCK WASH 6 20 5 0