A telecommunications chassis (20, 220) configured to be removably mounted to a telecommunications fixture, the fixture having a mounting bracket defining a rear portion that is configured for mounting to the telecommunications fixture and an elongate front portion that is configured to slidably receive the telecommunications chassis, wherein the front portion includes a latch opening, the telecommunications chassis comprising: a locking spring mounted to the telecommunications chassis, the locking spring defining a portion configured to flex laterally to snap in to the latch opening defined by the elongate front portion of the mounting bracket on the telecommunications fixture to lock the telecommunications chassis with respect to the mounting bracket; a release handle slidably mounted relative to the telecommunications chassis, the release handle configured for being pulled in a rearward-to-forward direction with respect to the telecommunications chassis, characterised in that the release handle defines a deflection tab, and in that the telecommunications chassis further comprises: a cover mounted to the telecommunications chassis, the cover defining a deflection ramp within the telecommunications chassis, the deflection ramp configured to interact with the deflection tab of the release handle for moving the deflection tab laterally to contact the locking spring when the release handle is slid with respect to the telecommunications chassis, wherein the release handle is configured such that pulling of the release handle in a rearward-to-forward direction with respect to the telecommunications chassis causes the deflection tab of the release handle to interact with the deflection ramp of the chassis and move the deflection tab laterally, and wherein lateral movement of the deflection tab causes the deflection tab to contact the locking spring and to cause the portion of the locking spring that is configured to snap in to the latch opening to flex laterally out of the latch opening for releasing the telecommunications chassis from the mounting bracket. a locking spring mounted to the telecommunications chassis, the locking spring defining a portion configured to flex laterally to snap in to the latch opening defined by the elongate front portion of the mounting bracket on the telecommunications fixture to lock the telecommunications chassis with respect to the mounting bracket; a release handle slidably mounted relative to the telecommunications chassis, the release handle configured for being pulled in a rearward-to-forward direction with respect to the telecommunications chassis, characterised in that the release handle defines a deflection tab, and in that the telecommunications chassis further comprises: a cover mounted to the telecommunications chassis, the cover defining a deflection ramp within the telecommunications chassis, the deflection ramp configured to interact with the deflection tab of the release handle for moving the deflection tab laterally to contact the locking spring when the release handle is slid with respect to the telecommunications chassis, wherein the release handle is configured such that pulling of the release handle in a rearward-to-forward direction with respect to the telecommunications chassis causes the deflection tab of the release handle to interact with the deflection ramp of the chassis and move the deflection tab laterally, and wherein lateral movement of the deflection tab causes the deflection tab to contact the locking spring and to cause the portion of the locking spring that is configured to snap in to the latch opening to flex laterally out of the latch opening for releasing the telecommunications chassis from the mounting bracket.