The RCI Custom Products HP Series rackmount hinged panels are designed to mount in any standard EIA equipment cabinet. Units are made of 1/8" (11 gauge) aluminum and come standard in either black or clear anodized finish (custom colors available). Base size for both H & V models is 2RU, with 1RU usable area available on the horizontal panel, 2 RU on the vertical. Additional RU may be added in 1 space (1.75") increments. Easy to turn thumb screws (model TS-1) are available separately.