A drawer for fiber-optic equipment, comprising: a tray for operably supporting a fiber-optic module that has a central axis and alignment rails, the tray comprising: a base having front and back ends (114, 118), a top side and opposite edges; parallel guide rails, wherein the parallel guide rails are adjacent the edges that define a central open channel sized to accommodate the fiber-optic module; front and back insertion guides (154, 158), wherein the front and back insertion guides (154, 158) are respectively formed in the parallel guide rails and configured to receive, support and align the fiber-optic module within the central open channel; central guiding features, wherein the central guiding features are formed on opposing inside surfaces of the parallel guide rails between the front and back insertion guides (154, 158), the central guiding features being configured to receive the fiber-optic module and guide the fiber-optic module to a central module position within the tray; flexures formed on the respective edges of the base; wherein the tray is formed as a unitary, molded structure from a single piece of material; and first and second opposing unitary side guides configured to slidingly engage the edges of the tray, wherein each of the side guides includes at least one channel, and wherein the side guides are configured so that the edges of the tray are slidingly engaged by the respective channels of the opposing side guides, and wherein each channel includes a plurality of slots, and wherein each flexure engages one of the slots to define a corresponding plurality of tray positions relative to the side guides. a tray for operably supporting a fiber-optic module that has a central axis and alignment rails, the tray comprising: a base having front and back ends (114, 118), a top side and opposite edges; parallel guide rails, wherein the parallel guide rails are adjacent the edges that define a central open channel sized to accommodate the fiber-optic module; front and back insertion guides (154, 158), wherein the front and back insertion guides (154, 158) are respectively formed in the parallel guide rails and configured to receive, support and align the fiber-optic module within the central open channel; central guiding features, wherein the central guiding features are formed on opposing inside surfaces of the parallel guide rails between the front and back insertion guides (154, 158), the central guiding features being configured to receive the fiber-optic module and guide the fiber-optic module to a central module position within the tray; flexures formed on the respective edges of the base; wherein the tray is formed as a unitary, molded structure from a single piece of material; and a base having front and back ends (114, 118), a top side and opposite edges; parallel guide rails, wherein the parallel guide rails are adjacent the edges that define a central open channel sized to accommodate the fiber-optic module; front and back insertion guides (154, 158), wherein the front and back insertion guides (154, 158) are respectively formed in the parallel guide rails and configured to receive, support and align the fiber-optic module within the central open channel; central guiding features, wherein the central guiding features are formed on opposing inside surfaces of the parallel guide rails between the front and back insertion guides (154, 158), the central guiding features being configured to receive the fiber-optic module and guide the fiber-optic module to a central module position within the tray; flexures formed on the respective edges of the base; wherein the tray is formed as a unitary, molded structure from a single piece of material; and first and second opposing unitary side guides configured to slidingly engage the edges of the tray, wherein each of the side guides includes at least one channel, and wherein the side guides are configured so that the edges of the tray are slidingly engaged by the respective channels of the opposing side guides, and wherein each channel includes a plurality of slots, and wherein each flexure engages one of the slots to define a corresponding plurality of tray positions relative to the side guides.