A connecting device for coupling first and second members includes a body having a first leg and a second leg integrally connected to the first leg. The first leg and the second leg are oriented at an angle with respect to each other. A rigid material core extends through both the first leg and the second leg, the core including a first core member integrally connected to a second core member. The first core member is angularly oriented with respect to the second core member such that the core defines a geometric shape. A resilient material sleeve commonly covers the core of both the first leg and the second leg. The first leg is frictionally received in a first member and the second leg is frictionally received in a second member to couple the first member to the second member.

Methods of joining members, forming molded portions with members, securing inserts with members, and joined members, such as for a frame or a frame for a fenestration unit, formed thereby, are disclosed. One embodiment of the method includes placing a first member with a first cavity in a joining position, placing a second member proximate the first cavity of the first member in the joining position, injecting a resin into the first cavity, allowing the resin to solidify at least partially to join the first member and second member to form a joined member, and removing the joined member from the joining position. Optionally, the joined member can be formed in a fixture, can include molded portions formed by the resin, and/or can include inserts held in place by the resin. Further, members without cavities can form a cavity that can receive the resin.

One embodiment is a photovoltaic (PV) module including a frame to receive a perimeter of a backside of a photovoltaic (PV) laminate. The cross rail assembly may include: a conductive frame to receive a perimeter of a backside of a photovoltaic (PV) laminate; one or more conductive cross rail members provide structural rigidity to the conductive frame; and one or more pairs of couplers coupled to the conductive frame, wherein: at least one coupler comprises a grounding coupler having a first keyed section to insert into an opening in the conductive frame and a second keyed section to mate with an end of a conductive cross rail member of the one or more conductive cross rail members to ground the conductive cross rail member to the frame; or at least one coupler of at least one of the one or more pairs includes a length to define a cabling channel.

Methods of joining members, forming molded portions with members, securing inserts with members, and joined members, such as for a frame or a frame for a fenestration unit, formed thereby, are disclosed. One embodiment of the method includes placing a first member with a first cavity in a joining position, placing a second member proximate the first cavity of the first member in the joining position, injecting a resin into the first cavity, allowing the resin to solidify at least partially to join the first member and second member to form a joined member, and removing the joined member from the joining position. Optionally, the joined member can be formed in a fixture, can include molded portions formed by the resin, and/or can include inserts held in place by the resin. Further, members without cavities can form a cavity that can receive the resin.

A screen frame includes at least two lineal members and a corner brace securing the two lineal members together. A turn piece latch is rotatably secured in an aperture in the corner brace. The turn piece latch includes a latch portion releasbly securing the screen frame to a window structure.

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).