Rockford Process Free Swinging Overlay Five Knuckle Hinge, 270º Screw-on Gloss Black - P454-1D

Rockford Overlay Hinge For Institutional Cabinets

Rockford Process free swinging overlay hinge provides semi-concealed, five knuckle support for institutional and similar cabinet applications, so doors swing smoothly while leaving a clean, professional frame appearance. This hinge is classified as an institutional hinge, which suits demanding environments where repeated door use is common and consistent swing performance matters. The free swinging overlay design lets the door move without built-in self-closing resistance, which helps when doors are frequently opened and left at various positions. A 270 degree opening capability allows the door to swing well past a standard right angle, which helps cabinets open wide for easier access during service work or routine use. The gloss black finish gives a uniform dark appearance on the hinge surfaces, which supports projects where dark or color-coordinated hardware is preferred. As a semi-concealed hinge, part of the hardware sits within the assembly while key elements remain visible, balancing appearance with straightforward installation and inspection.

Key Hinge Details That Support Daily Use

• The five knuckle construction distributes movement across multiple pivot points, which helps the overlay door travel more smoothly each time it is opened and closed in regular institutional service.
• The 270 degree screw-on design provides a wide opening arc, which allows doors to clear the cabinet opening so users and technicians can work inside the cabinet without the door obstructing access.
• The gloss black finish on the hinge surfaces presents a consistent dark appearance, which helps hardware blend with dark cabinet faces or frames where visual uniformity is important.
• The tight screw pin holds the knuckles firmly together, which supports stable door alignment during repeated use by limiting unwanted play at the pivot points.
• Elongated holes on both leaves offer a small adjustment range, which allows the installer to shift the hinge position slightly for better alignment of the door to the frame after mounting.
• The design uses the 32 mm hole system, which matches projects laid out on that drilling pattern so hinges locate consistently on cabinets built around that standard.

Overlay Hinge Mounting And Alignment Details

This five knuckle overlay hinge is screw-on, which allows each leaf to be secured directly to the cabinet and door using screws through the provided holes. The frame leaf length is 1-3/4 inches, which defines how far the hinge extends along the cabinet frame and helps determine leaf placement on the stile. Elongated holes on both leaves create a narrow slot rather than a fixed circle, which lets the hinge shift slightly before final tightening to refine overlay and reveal lines. The hinge is designed for the 32 mm hole system, which coordinates with cabinet layouts drilled on that system so hole spacing and hinge positions stay consistent across installations. The hinge is categorized as semi-concealed, meaning part of the hardware sits out of sight within the cabinet reveal while other parts remain visible, supporting both access to fasteners and a controlled finished appearance.

How This Institutional Hinge Works In Practice

Where This Semi-Concealed Overlay Hinge Fits Best

This Rockford Process Control, Inc. hinge is identified as an institutional hinge, so it suits cabinet doors in facilities where doors are opened frequently and consistent swing is important. The hinge is designed for the 32 mm hole system, positioning it for cabinets drilled on that standard layout in shops or institutional millwork programs. A frame leaf length of 1-3/4 inches defines how the hinge lands on the cabinet frame, which guides its use on frames sized to accept that leaf coverage. The hospital grade tips described for this hinge indicate a tip style tailored to hospital environments, which supports use on cabinets in healthcare or similar institutional settings where that detail is specified. The gloss black finish lets this hinge coordinate with darker cabinet finishes, which fits projects where visible hinge elements are intended to match or complement other black hardware.

Why The Hinge Details Support Repeatable Results

The tight screw pin described for this hinge holds the five knuckle joint firmly together, which supports repeatable door swing by reducing looseness at the pivot during long-term service. Elongated holes on both leaves allow small position shifts before final tightening, which lets installers fine tune the overlay, gap, and alignment so multiple doors line up uniformly on a run of cabinets. The 270 degree opening capability lets the door move back toward the cabinet side, which helps doors clear the opening during maintenance or stocking, limiting interference in tight areas. The material thickness of .095 inches, or 2.4 mm, gives the leaves a defined cross-section, which supports hinge rigidity where a thinner leaf could flex more under door weight. The hinge is available in gloss black and dull chrome finishes, which offers a choice between a dark finish and a bright metallic look to match different cabinet and hardware schemes.

Common Questions About This Rockford Overlay Hinge

Select This Hinge For 32 Mm Institutional Work

The Rockford Process free swinging overlay hinge with five knuckle construction and 270 degree opening suits institutional cabinets laid out on the 32 mm hole system. The gloss black finish, semi-concealed design, and 1-3/4 inch frame leaf length provide defined parameters for planning your door layout and hardware appearance. The tight screw pin, .095 inch material thickness, and elongated holes on both leaves give the hinge the stability and adjustment range needed to align doors across a run of cabinets. For projects calling for an institutional hinge with these characteristics, this P454-1D model from Rockford Process Control, Inc. offers a clearly specified option.