Embodiments described herein may be directed to the functional application and method of use of a heel bead gasket and glass stop for sealing a window frame. In accordance with the present disclosure, the heel bead gasket may comprise a head portion and a heel portion, each held in place by a glass stop. The head portion and the heel portion of the heel bead gasket may each include soft rubber portions for engaging a surface of the window and an inner portion of a window sill, respectively. The glass stop may exert a forces on both the head and heel portions of the heel bead gasket so as to press the rubber portions against surfaces, thereby creating seals. Together, the heel bead gasket and glass stop may create a seal that prevents water from leaking through the sill of the window frame.

A mullion assembly is provided for forming a window assembly, the window assembly comprising a first window frame and a second window frame coupled to a monolithic mullion core such that a distal portion of the first window frame is in contact with a proximal surface of the mullion core and a proximal portion of the second window frame is in contact with a distal surface of the mullion core. The mullion assembly further comprises a first and second female connector on a respective first and second side of the mullion core. A plurality of separate compartments is defined along a length of the mullion core vertically between the proximal and distal surfaces and laterally between the first and second female connectors. The mullion assembly further comprises first and second male connectors configured to engage the female connectors and seal the first and second sides of the mullion core.

A mulling system for a plurality of fenestration units includes a first joining plate configured to attach to a first outer edge of a first fenestration unit. The first joining plate includes a first outer face. The mulling system also includes a second joining plate configured to attach to a second outer edge of a second fenestration unit. The second joining plate includes a second outer face. The second joining plate is configured to engage the first joining plate to join together the first fenestration unit and the second fenestration unit with the first outer face facing the second outer face. The mulling system additionally includes a deflectable seal member attached to the first joining plate and having a sealing surface that faces away from the first outer face. The sealing surface is configured to deflect and seal against the second outer face of the second joining plate.

A mulling system includes a first joining plate with a first plate member, a second plate member, and a first thermal breaker that extend longitudinally along a mulling axis with the first thermal breaker attaching the first and second plate members. The mulling system includes a second joining plate that includes a third plate member, a fourth plate member, and a second thermal breaker that extend longitudinally along the mulling axis with the second thermal breaker attaching the third and fourth plate members. The second joining plate is configured to attach to the first joining plate to join together first and second fenestration units with the mulling axis extending between the first and second joining plates. The first joining plate substantially matches the second joining plate to define a corresponding rotated and engaged arrangement of the first joining plate and the second joining plate across the mulling axis.

The invention relates to an access panel configured for fixing to a service aperture in a wind turbine tower wall; wherein the access panel comprises a main panel and an adjacent sub-panel; the sub-panel comprising a bearing surface at an edge thereof; the main panel comprising a reference surface at an edge thereof; the main panel and the sub-panel being abuttable along a common seam; the seam comprising a said sub-panel bearing surface abutting a main panel reference surface; the main panel being dimensioned to close a main region of a tower wall aperture whereas the sub-panel is dimensioned to close a first sub-region of the aperture. The invention includes a method according to which the sub-panel is placed into a tower wall aperture and adjusted to bring its bearing surface into a predetermined position. Thereafter, a main panel is placed in the aperture with its reference surface in abutment with the bearing surface, thereby quickly and easily and reliably locating the main panel for securely fixing in the tower aperture.

Compound fenestration assembly mull joints including one or more mull end connectors, compound fenestration assemblies using those mull joints, and methods of making and using the same are described herein. The compound fenestration assembly mull joints including one or more mull end connectors described herein are configured to be attached to the building opening using a flowable bonding agent (in addition to attachment of the fenestration units to the building openings).

An extrusion component of a closure frame for defining an opening which is closable by a closure member and a method of making the same. The extrusion component comprises an elongate body having first and second sides, at least one of which is shaped for accommodating said closure member. The elongate body includes an outer layer integrally formed with an inner layer and the inner layer has an outer surface correspondingly shaped by or with an inner surface of the outer layer.

[Object] To provide a door frame structure and a method for mounting the door frame structure which improve rigidity, prevent deformation that is caused by relative story displacement of a building in the event of an earthquake, and enable easy mounting. [Solution Means] A door frame structure 1 is indirectly mounted to a wall surface 4 via mounting angles 11 fixed to the first reinforcing members 9. Therefore, the door frame structure 1 does not follow relative story displacement of the wall surface 4 caused by lateral vibration in the event of an earthquake, so that deformation of the door frame structure 1 is minimized, and a door 31 can be opened and closed even in an emergency.

A mullion assembly is provided for forming a window assembly, the window assembly comprising a first window frame and a second window frame coupled to a monolithic mullion core such that a distal portion of the first window frame is in contact with a proximal surface of the mullion core and a proximal portion of the second window frame is in contact with a distal surface of the mullion core. The mullion assembly further comprises a first and second female connector on a respective first and second side of the mullion core. A plurality of separate compartments is defined along a length of the mullion core vertically between the proximal and distal surfaces and laterally between the first and second female connectors. The mullion assembly further comprises first and second male connectors configured to engage the female connectors and seal the first and second sides of the mullion core.

The invention relates to an access panel configured for fixing to a service aperture in a wind turbine tower wall; wherein the access panel comprises a main panel and an adjacent sub-panel; the sub-panel comprising a bearing surface at an edge thereof; the main panel comprising a reference surface at an edge thereof; the main panel and the sub-panel being abuttable along a common seam; the seam comprising a said sub-panel bearing surface abutting a main panel reference surface; the main panel being dimensioned to close a main region of a tower wall aperture whereas the sub-panel is dimensioned to close a first sub-region of the aperture. The invention includes a method according to which the sub-panel is placed into a tower wall aperture and adjusted to bring its bearing surface into a predetermined position. Thereafter, a main panel is placed in the aperture with its reference surface in abutment with the bearing surface, thereby quickly and easily and reliably locating the main panel for securely fixing in the tower aperture.