Active door - The door people use every time they enter or leave the house. When there are double doors, it is the door that opens with an entry set knob or lever.
Antique brass – The finish on hardware that has a dark brown color, also denoted by industry as US5.
Arch top - A door with arched top rail and arched frame.
Backset – The distance from the edge of the door to the center of the hole drilled for your entry set knob, lever or deadbolt.
Ballcatch – An item of hardware inserted into hole drilled into top of door and used where only pulling or pushing opens the door. In double doors, they are used with dummy pairs of levers or knobs. They also can be used in the top of a small closet where pull may be used. The ball is pushed by spring tension into notched brass plate in jamb above door.
Bi-fold door – A typical bi-fold door is two panels connected by centralized hinges. Bi-fold doors are usually hung from overhead tracks and suspended by rollers or casters. The innermost door panel has a knob or a pull which allows the user to fold the door panels together. The folded door can then be pushed to the sides of the opening, allowing access to the entire area behind it. Similar sliding doors only allow part of the space to be accessed.
Blueprint – A photographic print showing dimensions, front, top and side views used for mechanical door construction.
Bore – The diameter of the hole drilled in a door for a knob, lever or deadbolt.
Bored lock – A lock intended for installation in a circular hole in a door.
Brick mold – The exterior trim that covers a seam between the jamb and wall.
Bypass door – Doors that slide past each other and which are commonly used as closet or utility room doors.
Caming – The Metal parts of a glass design. Metal options include lead, brass, copper, zinc (silver), or patina (black).
Casing – A wooden trim around a door that covers the seam between the jamb and wall. It conceals the gap between the door frame (called a jamb) and the rough opening and helps to hold the frame in the opening. Casing can be relatively plain such as square-edge design or detailed, such as colonial-style, French-style, Asian-style or Mexican-style molding.
Caulking – A compound for filling joints and sealing cracks to prevent leakage of water and air; commonly made of silicone- bituminous- acrylic or rubber-based materials.
Colonial – An architectural style associated with an early American period; Early American style c. 1730.
Contemporary – Doors with a modern architectural style.
Craftsman – An American architectural style that began in the last years of the 19th century.
Cylinder bore - Refers to a machining procedure that requires a round hole to accommodate a standard entry set.The diameter of the hole is 2-1/8″ drilled in a door for an entry set knob, lever or deadbolt.
Deadbolt – Locking mechanism for an entrance door or other door. Deadbolts can be a single cylinder or double cylinder. With a single cylinder deadbolt, a key is used on the outside and is turned by hand on the inside. With a double cylinder deadbolt, a key is used on both sides.
Decorative glass – Glass which has been formed or arranged into structure or patterns for ornamental and decorative applications. Beveled glass, camed glass, and blown glass are a few examples.
Door shoe – A U-shaped door attachment used to create a weatherproof seal at the bottom of a door.
Door stop – The small piece of wood, usually 1 3/8″ – 1 1/2″ wide, that is attached to the door jambs on both sides and on top of the door. This strip of wood is where the door comes to rest when it is closed. It stops the door from moving any further, and also covers the gap that would otherwise appear between the door and the jambs.
Drip cap – Molding that directs water away from a structure to avoid seepage under the exterior siding material, typically applied over window and exterior door frames.
Dummy pairs – Knobs or levers that do not turn. They can be split up for bi-fold door set, since no hardware is needed on back of the bi-folds. Dummy pairs can also be used on double French door units, where ballcatches are used to hold doors in place. Dummy Pairs do not require a standard hole to be drilled, since most are attached from each side of the door.
Entry – Any door that is used to enter a building.
Fasteners – Devices for jointing two parts together, such as screws nails and bolts.
Fiberglass – A robust, secure style of door that looks and feels like a traditional timber door. It’s made from an outer skin of GRP (Glass Reinforced Plastic, or fiberglass) over a wooden frame filled with foam insulation.
Finials – Also called decorative tips, these may come in different shapes, such as balls or pointed steeples, which attach to the top and bottom of a hinge for decoration. Only some hinges will accept these finials.
Fire door – A door with a fire-resistance rating (sometimes referred to as a fire protection rating for closures) used as part of a passive fire protection system to reduce the spread of fire or smoke between compartments and to enable safe exit from a building.
Flush bolt – Bolts mounted in a door to lock a door in place. These bolts slide up into the jamb above the door and down into the threshold or floor below the door. They are primarily used on double doors where one door is locked in place and the other door is the one mainly used (active door). When needed the door locked in place with the flush bolts can be opened. Flush bolts are housed in a T-Astragal.
Frame – The set of jambs that holds the door unit together. The door is pre-hung in the frame.
French – A door with glass panels separated by wood muntons.
Glass – A door made primarily of glass.
Hardware – Refers to any of the items that are attached to a door or a drawer to enhance its functionality or appearance.
Head – The top or upper member of any door.
Hinges – The metal objects that attach your door to the jamb, normally with screws. They can be made from brass, steel, iron or other metals.
Hollow core – A flush door constructed with two skins or door faces separated by stiles and rails at the perimeter.
Interior – Any door that is placed inside a building with no access to the outdoors.
Jamb – The wood that surrounds the door, and which the hinges are attached to on one side, and which the latch goes into on the other side of the door.
Kerfed jamb – A jamb with a groove or slit in the wood caused by cutting.
Keyway – The part of the lock mechanism where the key is inserted. It can be changed if needed for security reasons, or changed if wanted for ease of use, where more than one lock is in existence, and you want all the locks to take the same key.
Kiln-drying – The wood is kiln-dried for two weeks to a moisture content of 10-12% and has an additional week or so of “resting” to allow the wood to reabsorb moisture in the air. This process ensures that the wood regains its dimensional stability and will not warp or split. This critical stage of reabsorbing moisture allows the doors to withstand the rigors of climatic change.
Knob – The round part of door handle that you hold with your hand. The knob can be made of brass, porcelain, steel, glass, iron or other products.
Lever – Has the same function as a knob, except is longer and thinner. To open a door, levers are pushed down. Beside the decorative uses of a lever, they are also used in applications where someone is handicapped and cannot grasp a knob very well.
Lintel – Decorative carving on the wall just above the door.
Lockset – The complete set of locking hardware mechanism for a door such as mortise lock or bored lock.
Machining – The preparation for the entry set so that it will operate properly in the door.
Mortise lock - This type of lock is enclosed within the edge of a door, so that it cannot be seen or removed when the door is closed. Mortise lock is one which requires a pocket, or mortise, to be cut into the door, cabinet door, or piece of furniture into which the lock is installed.
Molding – A strip of material with various cross sections used to cover transitions between surfaces or for decoration. It is traditionally made from solid milled wood or plaster but may be made from plastic or reformed wood.
Mull cap – Interior and exterior trim for seam between door and sidelight.
Muntons – Wooden trim that holds panels of glass in the door which makes a style of a French door, such a five light, ten light, etc.
Non-rising pin – A pin inserted into a hinge that cannot be removed. Used mainly where security is needed, so that the pin cannot be removed, and door removed from opening. On exterior doors which open outward, the pin is on the outside of the building. In this case, these pins may be used more often.
Ornament – Additional decorative accessory made in wood or metal (not door hardware) which adds a unique grace and beauty, a manner of very special quality that adorns.
Out swing – When the door swings to the outside of the house when opened. Commonly used in garage doors.
Paneling – Doors that have rectangular recesses (called panels) framed by square sections that are slightly raised. These types of doors are considered traditional in style.
Passage – Knobs or levers that are for doors that do not need locked, such as a closet or doors between rooms and family rooms or living rooms.
Patio door – A sliding door, usually made of glass, that opens onto a patio, deck or garden
Pewter – A term for a hardware finish; a non-shiny gray color, called US15A by the door industry.
Pocket door – A sliding door that slides along its length and disappears, when open, into a compartment in the adjacent wall. Pocket doors are used for architectural effect, or when there is no room for the swing of a hinged door.
Polished brass – Brass finish that is shiny, also called US3 by the door industry.
Polished chrome – Chrome finish that is shiny, also called US26 by the door industry.
Pre-hung – Doors or combinations of doors and sidelights put together with jambs, hinges, threshold, T-Astragal, and trim to make a total working door system (a unit).
Privacy – Privacy knobs or levers are used on doors where locks are needed, such as on bathrooms, or bedrooms on interior doors.
Rosettes – A rosette is a round, stylized flower design, engraved into a door.
Rough opening - An opening in the wall for your door and/or sidelights before any framing material has been applied. This space must be slightly larger than the total size of the door and frame together.
Round top – A door with round top rail or transom.
Satin brass – Brass finish that is not shiny, also called US4 by the door industry.
Shaker – Shaker doors get their name from the center part of the door being made from 1/4-inch plywood.
Shutter – A solid and stable door covering usually consisting of a frame of vertical stiles and horizontal rails (top, center and bottom).
Sidelight – A fixed panel of wood and glass next to a door.
Slab – A door only or a sidelight only. No frames, jambs or parts added to make the door operate.
Sliding door – A type of door which opens horizontally by sliding, whereby the door is either mounted on or suspended from a track. Types of sliding doors include pocket doors, Arcadia doors, and bypass doors.
Solid core – A door where the inner material is made of solid wood. This type door is usually used for exteriors doors to the outside or garage.
Sticking – A molding that is part of a larger piece of wood such as a frame (as opposed to being applied).
Stile – One of the upright pieces in a frame; one of the primary members of a frame, into which the secondary members are mortised.
Strike plate – Plate attached to door jamb, which receives the latch, when the knob or lever is turned, allows the door to be closed or opened.
T-astragal – Vertical piece of wooden molding that fits between double doors to provide an effective weather seal. It is attached to the inactive door of a double door unit. It houses the flush bolts.
Threshold – A piece of wood or stone placed beneath a door; a doorsill.
Transom – A horizontal crosspiece over a door or between a door and a window above it.
Tubular lock – A lock having a tubular shaped case and requiring bored (round) holes rather than a chiseled rectangular mortise.
Victorian – An architectural style derived from the late 19th century British period.
Weather-strip – A narrow strip of material to cover the joint of a door or to exclude the cold.