Abstract: A removable device can be placed into the groove of window frame of a sliding window and which prevents the window from pivoting inward during a storm. The device is a block having a top surface, a bottom surface a front face, a rear face, a leading end and a trailing end. The bottom surface of the block is configured to fit slidably within a window frame adjacent a sash within the window frame. The leading end of the block has a leg extending outward from the block so that when the block is positioned in the window frame so that the leading end abuts the window frame, the leg extends along a peripheral edge of the sash and prevents the sash from pivoting out of the window frame.

Abstract: An interior storm window assembly has an outer frame adapted to be attached to an existing window frame or wall and having a channel running around an interior surface thereof, and a window unit comprising an inner frame surrounding a window pane. The window unit is adapted to be snap-fit inside the outer frame so that the window unit is securely held within the outer frame without play. There is a locking device for locking the window unit within the outer frame. The outer frame is attached to an existing window frame or to a wall surface surrounding an existing window, to provide an extra layer of protection against hurricane-force winds.

Abstract: A security device for installation in an upper sash of a double-hung window, in which the window has a window frame having two side surfaces, a top surface and a bottom surface, a lower sash mounted in a lower half of the window frame and an upper sash mounted in an upper half of the window frame. The upper and lower sashes are mounted offset from each other so that they slide up and down the window frame independently of each other. The security device is mounted to the upper sash via a bracket, and comprises a post having a top end that abuts the top surface of the window frame and a bottom end abutting a top surface of the lower sash to prevent the lower sash from sliding within the window frame. There is a cross-bar running through the post perpendicular to a longitudinal axis of the post and extending in opposite directions from the post. The cross-bar is located immediately beneath the bracket to act as a stop against downward sliding of the upper sash.