| Cylindrical Lever Lockset |
Uses a tubular chassis with a lever handle, latch, and optional locking function. |
Bedrooms, bathrooms, entry doors, and interior passage doors. |
Private offices, classrooms, small retail areas, and low-to-medium traffic doors. |
Guest rooms, staff rooms, and service areas when compatible with the access-control plan. |
Available in privacy, keyed, classroom, and electronic configurations; commercial models can be tested to applicable cycle and strength standards. |
Levers are generally easier to operate than knobs and are suitable for users with limited hand strength when properly installed. |
Inspect latch alignment, tighten mounting screws, and lubricate only where recommended by the manufacturer. |
Most versatile general-purpose option |
| Knob Lockset |
Combines the door handle and locking mechanism in a rounded knob. |
Interior rooms, closets, and traditional-style residential doors. |
Low-traffic interior spaces where accessibility and heavy-duty performance are not primary concerns. |
Decorative low-traffic areas rather than main guest-room or public routes. |
Provides basic latching and locking, but the knob can be easier to defeat by twisting or gripping the hardware. |
Less suitable for people with reduced grip, arthritis, or limited dexterity than lever-operated hardware. |
Check for loose roses, worn springs, and latch friction; replace when operation becomes unreliable. |
Traditional residential interiors |
| Mortise Lockset |
Fits into a pocket cut into the door edge and combines latch, lock, and often deadbolt functions in one case. |
High-end entry doors, renovation projects, and homes requiring robust mechanical hardware. |
Busy offices, schools, healthcare areas, public buildings, and high-use corridors. |
Guest rooms, conference areas, public entrances, and doors requiring a durable integrated lock body. |
Strong construction and multiple functions support high-use applications; selection must match door thickness, frame preparation, and fire-rating requirements. |
Lever-operated versions can provide good usability; emergency egress must remain compliant with local regulations. |
Requires accurate installation and periodic inspection of the case, strike, latch, and trim. |
High-traffic and premium installations |
| Deadbolt |
Provides supplemental security with a solid bolt that is not spring-retracted by normal pulling force. |
Exterior entry doors, side doors, and doors requiring additional resistance to forced entry. |
Storage rooms, perimeter doors, utility rooms, and selected back-of-house areas. |
Back-of-house rooms and restricted areas when coordinated with emergency-exit requirements. |
Single-cylinder designs operate with a key outside and thumbturn inside; double-cylinder designs require a key on both sides and may create egress concerns. |
Thumbturns are easier to use than interior keys, but all configurations must allow safe emergency exit where required. |
Keep the bolt and strike aligned; verify that the bolt extends fully without forcing the key or thumbturn. |
Supplementary exterior-door security |
| Electronic Access-Control Lock |
Controls entry using credentials such as a card, mobile credential, PIN, biometric factor, or wireless signal. |
Home offices, apartment buildings, shared entrances, and properties needing temporary or auditable access. |
Offices, campuses, healthcare facilities, warehouses, and multi-tenant buildings. |
Guest rooms, staff entrances, meeting rooms, and restricted service areas. |
Can support audit trails, scheduled permissions, rapid credential cancellation, and integration with centralized access management; depends on power, network, and cybersecurity controls. |
Reduces key handling and can support multiple credential methods; provide a reliable mechanical or electronic emergency override where required. |
Maintain batteries or power supplies, test fail-safe or fail-secure behavior, update software, and protect credentials from unauthorized use. |
Managed access and changing user permissions |
| Panic Exit Device |
Allows a latched exit door to open by pressing a horizontal touch bar or push pad from the egress side. |
Usually unnecessary for ordinary homes, but useful for large private facilities or shared residential buildings. |
Assembly spaces, schools, offices, retail stores, warehouses, and other occupied buildings with designated exit doors. |
Ballrooms, restaurants, conference facilities, theaters, and public exit routes. |
Designed to support rapid egress and may include fire-rated, alarmed, delayed-egress, or electrified versions subject to code approval. |
Push-bar operation is intuitive and generally supports one-motion exit operation when correctly specified. |
Test the touch pad, dogging or alarm functions, latch engagement, signage, and door closer at scheduled intervals. |
High-occupancy exit doors |
| Door Closer |
Controls the closing speed and final latching of a door after it is opened. |
Exterior doors, garage-to-home doors, fire-separation doors, and doors needing automatic closure. |
Entrances, corridors, stairwells, fire doors, and high-traffic interior openings. |
Guest-room corridors, stairwells, service corridors, and public-area doors. |
Adjustable closing and latch speeds help maintain security and fire-door performance; power size must match door weight, width, wind, and usage. |
Excessive closing force can make doors difficult to open, so adjustments must balance accessibility, latching, and code requirements. |
Inspect arm fasteners, leaks, mounting plates, sweep speed, latch speed, and door alignment. |
Controlled closing and fire-door support |
| Pull Handle with Separate Latch |
Provides a prominent grip while a separate lock, latch, or push plate controls opening. |
Contemporary entry doors, glass doors, pivot doors, and large-format residential doors. |
Retail entrances, offices, showrooms, public buildings, and doors with architectural finishes. |
Main lobbies, restaurants, boutiques, and feature entrances where appearance is important. |
Performance depends on the separate locking and latching system; through-bolted mounting is generally more secure than adhesive-only attachment. |
Large, easy-to-see handles can improve approach and grip, but opening force and door weight still need to be controlled. |
Check mounting fasteners, glass or door-panel stress, surface wear, and alignment of the separate latch. |
Design-led entrances and heavy doors |
| Hinges |
Supports the door and allows it to swing around its vertical axis. |
Interior and exterior doors, cabinets, gates, and specialty residential openings. |
Office doors, fire doors, institutional doors, and high-cycle openings. |
Guest rooms, public corridors, service doors, and back-of-house openings. |
Ball-bearing hinges are commonly selected for heavier or high-frequency doors; fire-rated assemblies require compatible listed components. |
Proper hinge alignment reduces opening force and prevents dragging or uneven gaps. |
Inspect screws, knuckles, pins, wear, corrosion, and door sag; replace damaged hinges rather than overtightening them. |
Reliable movement and long-term alignment |
| Door Stop or Floor Stop |
Limits door travel and protects walls, hardware, and adjacent surfaces from impact. |
Bedrooms, kitchens, hallways, and entry doors near walls or furniture. |
Offices, corridors, classrooms, healthcare areas, and service spaces. |
Guest rooms, corridors, public areas, and housekeeping routes. |
Helps prevent damage but should not obstruct required clear width, create a trip hazard, or interfere with door closers and fire doors. |
Low-profile wall or floor models are preferable where pedestrian traffic is heavy. |
Check anchors, rubber tips, floor condition, and whether the stop is transferring excessive force to the door. |
Protection of surrounding finishes |
