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In a hinge (1) comprising a frame-side hinge portion (4) adapted to be pre-mounted to a frame (2) and a wing-side hinge portion (6) adapted to be pre-mounted to a door wing (3), wherein the hinge portions (4,6) are articulated to each other and at least one of the hinge portions (4;6) is provided wi

In a hinge (1) comprising a frame-side hinge portion (4) adapted to be pre-mounted to a frame (2) and a wing-side hinge portion (6) adapted to be pre-mounted to a door wing (3), wherein the hinge portions (4,6) are articulated to each other and at least one of the hinge portions (4;6) is provided with a height adjustment device (8) comprising attachment holes (10) of oval shapes extending in the adjustment direction, with attachment bolts (14) guided through the attachment holes (10), it is provided that the height adjustment device (8) comprises a releasable locking device (20) which, when in its locking position, holds the hinge portion (4;6) in a central position relative to the screwed attachment bolts (14).

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In a hinge (1) comprising a frame-side hinge portion (4) adapted to be pre-mounted to a frame (2) and a wing-side hinge portion (6) adapted to be pre-mounted to a door wing (3), wherein the hinge portions (4,6) are articulated to each other and at least one of the hinge portions (4;6) is provided wi

In a hinge (1) comprising a frame-side hinge portion (4) adapted to be pre-mounted to a frame (2) and a wing-side hinge portion (6) adapted to be pre-mounted to a door wing (3), wherein the hinge portions (4,6) are articulated to each other and at least one of the hinge portions (4;6) is provided with a height adjustment device (8) comprising attachment holes (10) of oval shapes extending in the adjustment direction, with attachment bolts (14) guided through the attachment holes (10), it is provided that the height adjustment device (8) comprises a releasable locking device (20) which, when in its locking position, holds the hinge portion (4;6) in a central position relative to the screwed attachment bolts (14). vent creating a weakened portion on the heat seal; and d. a sleeve containing the tray therein, the sleeve including a sleeve top positioned snugly against the heat seal, thereby maintaining the heat seal and resisting pressure from within said tray interior during cooking, the sleeve further including at least one port aligned with said vent on the heat seal when the tray is retained within the sleeve, said port being only slightly larger than said vent, such that pressure from within said tray interior causes the heat seal to first rupture at said vent and aligned port. 2. The apparatus of claim 1, wherein said sleeve is transparent to radiant energy. 3. The apparatus of claim 1, wherein said sleeve top is free of any apertures other than ports aligned with respective vents positioned upon the rim of said tray. 4. The apparatus of claim 1, and further comprising a lid positioned between the heat seal and said sleeve top. 5. The apparatus of claim 1, wherein each vent comprises a V-shaped indentation formed in the rim of said tray and a channel extending beneath the V-shaped indentation and tapering into the sidewall of said tray. 6. The apparatus of claim 1, wherein each vent comprises a V-shaped indentation formed in the rim of said tray and forming a V-shaped pocket under the heat seal. 7. The apparatus of claim 1, wherein said tray further comprises a bottom surface, a plurality of ribs extending from said bottom surface to provide a cooking plane above said bottom surface. 8. A method of preparing a frozen dinner for subsequent sale, the method comprising the steps of: a. providing a tray having food positioned therein, said tray including a rim, at least one sidewall, and at least one vent positioned upon the rim of said tray; b. attaching a heat seal to the rim of said tray to hermetically seal the food in the tray, the heat seal having a weakened portion adjacent to said vent; c. providing a sleeve, including a sleeve top and at least one sleeve side connected to said sleeve top, said sleeve defining a port that is slightly larger than said vent; and d. placing said tray in the sleeve such that the sleeve top is positioned snugly against the heat seal, thereby maintaining the heat seal and resisting pressure from within said tray during cooking, and said port is aligned with the said vent, such that pressure from within said tray causes the heat seal to first rupture at said vent and aligned port. 9. The method of claim 8, wherein said sleeve is transparent to radiant energy. 10. The method of claim 8, wherein said sleeve top is free of any apertures other than ports aligned with respective vents positioned upon the rim of said tray. 11. The method of claim 8, wherein the step of providing the sleeve includes cutting an arc in a flattened piece of cardboard and folding the cardboard along the ends of the arc to create the port in said sleeve.