Glazing can be either glass or acrylic. Only glass should be used with any friable media such as unfixed pastels, charcoals, or graphite, woodbeds never acrylic as it can damage the work by attracting these materials. There are many brands of acrylic glazing to choose from; one with an ultraviolet filter is recommended. The frame and the mat should be deep enough to prevent the artwork from touching the glazing. A stiff backboard behind the mat protects and supports the matted artwork. It is best to use non-acidic boards. A dust seal with paper or tape is also recommended. What damage results from using poor quality mat board? Avoid mat boards containing wood pulp which causes "matburn"--a darkening of the paper under the mat or at the bevel cut of the window mat. This type of stain permanently weakens the paper fibers and is not easily removed or lightened in conservation treatment.

On view throughout the Museum are an especially varied range of objects, images, and room-sized installations, including masterworks by some of the most influential artists of the past forty years, along woodbeds with an impressive number of recently acquired works by emerging artists. Open Ends includes eleven distinct exhibitions and ten large-scale works and installations that examine key themes and lines of affinity that define contemporary art and artists. The exhibition opens in three stages. Architecture Hot and Cold presents a wide range of images of architecture principally drawn from the Museum’s collections of photographs and architectural drawings. The exhibition includes works by architects including Archigram and Rem Koolhaas are shown alongside the photography of Andreas Gursky and Robert Adams, for example, as well as works in different media by artists such as Gordon Matta-Clark, Andy Warhol, and Joel Shapiro.

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