A rail system for supporting equipment in a rack is disclosed. The rail system may include: a first support rail assembly extending between a pair of vertical columns; a second support rail assembly extending between a different pair of vertical columns. Each support rail assembly may include: a support rail having opposite ends; aligners configured to align the opposite ends of the support rail with apertures of vertical columns; and mounting plates configured to removably secure the aligners to the opposite ends of the support rail. At least one mounting plate may be further configured to define at least one receiving portion for receiving a fastener for securing an equipment supportable in the rack.