Abstract: An optical component housing box including: a housing; and a bracket attached to a side surface of the housing, the bracket including: a fixing portion fixed to the housing; an attachment portion configured to be screwed into one of a plurality of screw holes opened in support pillars provided on both sides of a rack; and a hinge portion, wherein when attaching the optical component housing box to the rack, after the bracket passes between the support pillars by the hinge portion being closed and the attachment portion falling to a fixing portion side as the housing is moved into the rack from a side opposite to a direction in which the attachment portion is to be screwed to the support pillar, the attachment portion is attached to the support pillar in a state of standing up relative to the fixing portion.

Abstract: An optical component housing box including: a housing; and a bracket attached to a side surface of the housing, the bracket including: a fixing portion fixed to the housing; an attachment portion configured to be screwed into one of a plurality of screw holes opened in support pillars provided on both sides of a rack; and a hinge portion, wherein when attaching the optical component housing box to the rack, after the bracket passes between the support pillars by the hinge portion being closed and the attachment portion falling to a fixing portion side as the housing is moved into the rack from a side opposite to a direction in which the attachment portion is to be screwed to the support pillar, the attachment portion is attached to the support pillar in a state of standing up relative to the fixing portion.