A muntin bar fabrication system can be used to efficiency produce a wide variety of different types of muntin bars, allowing the fabrication of both standard and custom muntin bar assemblies for doors, windows, and other fenestration products. In some examples, the fabrication system includes a muntin bar stock storage assembly that holds multiple different types of muntin bar stock. The system also includes a muntin bar stock extraction device that extracts one of the different types of muntin bar stock from the storage assembly and conveys the extracted muntin bar stock to a feed device. The feed device feeds the extracted piece of muntin bar stock into a cutting system that includes a multi-axis cutter. The cutting system that performs one or more cutting operations on the extracted muntin bar stock so as to fabricate one or more individual muntin bars from the extracted muntin bar stock.

A clip for supporting a muntin grid, a muntin grid, and a method of assembly is disclosed herein. The clip includes coupled together lateral and longitudinal members, each supporting bosses, and first and second arms respectively. The clip for coupling to the first and second muntin bars via first and second notches in the respective muntin bars. The muntin bars are formed by pre-notching and then roll forming, wherein the bosses support the first and second muntin bars when the clip is coupling the first muntin bar to the second muntin bar.

A retrofit window kit, including a plurality of magnetic sash elements configured to be positioned at one or more locations on an interior perimeter of the sash; and a corresponding plurality of magnetic window grid elements each configured to magnetically couple to one of the magnetic sash elements and constructed as a clip or a cap sized to fit over and frictionally attach to an exterior end of a window grid muntin.

Perimeter frame for sliding glass doors of the type including extruded metal profiles that are combined together circumferentially surrounding the glass sheet having two lateral profiles (1) arranged vertically and that fit on the sides of the glass sheet (4), a set of lower profiles (2) arranged horizontally on each side of the glass sheet (4) at its lower part and a set of upper profiles (3) arranged vertically in the upper area of the sheet glass (4), between which there is provided an opening (5) through which protrudes the upper portion of the glass (6), in which the clamps (7) that hold the sheet are applied.

A magnetic window attachment assembly for attaching a muntin grid to a windowpane includes a first magnet or first ferromagnetic material attached to the windowpane at a first location and a second magnet or second ferromagnetic material attached to the muntin grid at a second location that aligns with the first location when the muntin grid is installed thereon. Magnetic attraction between the first magnet or the first ferromagnetic material and the second magnet or the second ferromagnetic material causes the muntin grid to be attracted to and removably engaged with the windowpane. The first magnet or first ferromagnetic material may have a convex surface, and the second magnet or second ferromagnetic material may have a concave surface that mates with the convex surface of the first magnet or first ferromagnetic material.

A retrofit window kit, including a plurality of magnetic sash elements configured to be positioned at one or more locations on an interior perimeter of the sash; and a corresponding plurality of magnetic window grid elements each configured to magnetically couple to one of the magnetic sash elements and constructed as a clip or a cap sized to fit over and frictionally attach to an exterior end of a window grid muntin.

A muntin bar fabrication system can be used to efficiency produce a wide variety of different types of muntin bars, allowing the fabrication of both standard and custom muntin bar assemblies for doors, windows, and other fenestration products. In some examples, the fabrication system includes a muntin bar stock storage assembly that holds multiple different types of muntin bar stock. The system also includes a muntin bar stock extraction device that extracts one of the different types of muntin bar stock from the storage assembly and conveys the extracted muntin bar stock to a feed device. The feed device feeds the extracted piece of muntin bar stock into a cutting system that includes a multi-axis cutter. The cutting system that performs one or more cutting operations on the extracted muntin bar stock so as to fabricate one or more individual muntin bars from the extracted muntin bar stock.

Perimeter frame for sliding glass doors of the type including extruded metal profiles that are combined together circumferentially surrounding the glass sheet having two lateral profiles (1) arranged vertically and that fit on the sides of the glass sheet (4), a set of lower profiles (2) arranged horizontally on each side of the glass sheet (4) at its lower part and a set of upper profiles (3) arranged vertically in the upper area of the sheet glass (4), between which there is provided an opening (5) through which protrudes the upper portion of the glass (6), in which the clamps (7) that hold the sheet are applied

A muntin bar fabrication system can be used to efficiency produce a wide variety of different types of muntin bars, allowing the fabrication of both standard and custom muntin bar assemblies for doors, windows, and other fenestration products. In some examples, the fabrication system includes a muntin bar stock storage assembly that holds multiple different types of muntin bar stock. The system also includes a muntin bar stock extraction device that extracts one of the different types of muntin bar stock from the storage assembly and conveys the extracted muntin bar stock to a feed device. The feed device feeds the extracted piece of muntin bar stock into a cutting system that includes a multi-axis cutter. The cutting system that performs one or more cutting operations on the extracted muntin bar stock so as to fabricate one or more individual muntin bars from the extracted muntin bar stock.

A security system and method for preventing unwanted passage through windows and doors of a building includes custom sizing and welding of hardened steel structures that mount into the door jamb or window frame, on the inside of the door or window with the use of threaded fasteners. The custom assembled structure consists of an outer frame and horizontal and vertical pickets that may be formed of flat stock, hollow square or rectangular steel tubing or solid square hardened steel bars. The system and method involves specifically spacing the vertical and horizontal pickets so as to lineup with an ornamental structure on the window or door (e.g., grids) without obstructing the view of the door or window so that the steel bars of the security structure is essentially invisible.