The nestable and drainable shower niche insert system inserts vertically and is retained within a shower stall. The system includes a water-tight pan having outwardly sloped walls, to insert and retain within and against the shower stall, and a nest pan retained within the water-tight pan. The nest pan has at least one horizontal wall adjacent one of the outwardly sloped walls, to guide and drain liquid running off the horizontal wall into the shower stall.

A closure device having a lock element that can be locked on a mating piece, preferably for closing a sealing flap of an opening, in particular an inspection flap, preferably in a drywall construction, in particular for a wall or a ceiling is provided. A closure device is distinguished by the fact that the lock element is arranged in such a way that, preferably under the action of a spring, in a first position with respect to the mating piece it is or can be moved into a locking position and, in a second position, it reaches a position and/or a state without any blocking action.

There is provided an access panel for releasably covering an aperture in a structure, the access panel including a panel member having inner and outer sides, and a panel stop extending from said inner side. The access panel includes a mounting member attached to the inner side adjacent a first edge to engage the structure. The access panel also includes a movable clip member slidably mounted on the panel member. The clip member comprises a casing and a mounting flange secured to a first end of the casing. The casing is linearly movable over the panel stop. The mounting flange is adapted to engage the structure proximate an opposed second edge of the panel member. The access panel also includes a spring situated within the casing between the first end of the casing and the panel stop for biasing the clip member toward the second edge in use.

A shielded locking system for securely closing a lid on an enclosure, such as a grade level utility vault, including an L-bolt connected to a spring-biased slide member positioned on the underside of the lid that rotates in a slotted housing that securely retains the L-bolt under the lid, the slide member engaging an abutment on the inside of the enclosure when the lid is forced down over an opening in the enclosure by downward force on the lid which progressively causes the latch to retract against the spring-bias from contact with the abutment and then snaps the latch into a spring-biased locking position under the abutment, and a non-conductive cover positioned over and connected to the locking system to shield the L-bolt from electrical conductivity from within the enclosure.

A closure device having a lock element that can be locked on a mating piece, preferably for closing a sealing flap of an opening, in particular an inspection flap, preferably in a drywall construction, in particular for a wall or a ceiling is provided.

A closure device is distinguished by the fact that the lock element is arranged in such a way that, preferably under the action of a spring, in a first position with respect to the mating piece it is or can be moved into a locking position and, in a second position, it reaches a position and/or a state without any blocking action.

A cabinet with a snap-in frame is described. The cabinet uses spring clips that engage the frame to an opening of the cabinet. The spring clips are fastened to outer edges around the opening of the cabinet. The frame is urged into the opening of the cabinet. The frame compresses the spring clips as the frame is pushed into the opening of the cabinet. End portions of the spring clips snap into recesses of an outer surface of the frame. The spring clips are easily aligned along the opening of the cabinet to ensure proper placement of the frame with respect to cabinet.

A shielded locking system for securely closing a lid on an enclosure, such as a grade level utility vault, including an L-bolt connected to a spring-biased slide member positioned on the underside of the lid that rotates in a slotted housing that securely retains the L-bolt under the lid, the slide member engaging an abutment on the inside of the enclosure when the lid is forced down over an opening in the enclosure by downward force on the lid which progressively causes the latch to retract against the spring-bias from contact with the abutment and then snaps the latch into a spring-biased locking position under the abutment, and a non-conductive cover positioned over and connected to the locking system to shield the L-bolt from electrical conductivity from within the enclosure.

Trapdoor-insert assembly having a trapdoor with a fixed frame, a movable frame disposed in the fixed frame and a panel mounted on the movable frame. At least one of the frames including at least one section having a longitudinal seat defined by a bottom wall and by two sidewalls. The two sidewalls include two projecting wings in opposite parallel position that extend for the entire length of the section. The assembly also includes an insert, which is connected to the section and has an operating portion and a coupling body with two retaining teeth that extend along opposite directions and are engaged under the two projecting wings.

A frameless access panel comprises a panel member having an inner surface and an outer surface, at least one fixed projection mounted to the inner surface of the planar metal sheet and being spaced from a first edge of the panel member, at least one moveable member configured to slide along a respective track adjacent the inner surface between a first position and a second position, the first position being spaced from a second edge of the panel member, the second edge being opposite the first edge, and the second position being spaced further from the second edge than the first position, the moveable member comprising a tab extending outwardly therefrom, and a respective biasing member providing a force for biasing the at least one moveable member towards the first position. The frameless access panel is generally non-combustible.

Structures and methods for access panels. Some include a panel member having an inner side; a mounting member having a portion extending from the inner side at an angle to the inner side; and a retaining member coupled to the mounting member, the retaining member having a length and being biased to be in contact with the inner side along a portion of the length, the retaining member also being capable of flexing away from the inner side.