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Accordion Door
A door that collapses to one side of the frame when opened. We recommend using a Cased Opening No-Stop Frame for this application.

Adjustable Frame
A Door Frame specifically designed to accommodate varying wall thickness' (also known as expandable frame). Timely's Adjustable Frame consists of a door side and a closure side. Three different widths of closure sides are available, resulting in adjustments for wall thickness': 3-3/4" to 5-1/2"; 5-5/8" to 7-3/8"; 7-1/2" to 9-1/8".

Astragal
A moulding or strip that is attached to the inactive door. Its purpose is to cover or close the gap between a pair of doors.

Backset
See: Hinge Backset.

Bi-Fold Door
Two doors connected with hinges, enabling them to fold together. Typically attached to a track and hanger fastened to the header. We recommend using a Cased Opening w/Stop Frame. This hides track and hangers.

Bi-Pass Door
Doors that slide past each other within the door frame, as opposed to being hinged. We recommend a Cased Opening No-Stop Frame. This provides a flat surface for mounting track and fascia.

Blank Jamb
Vertical member of frame without hardware preparation.

Blank T-Strike Filler Plate
Blank strike plate used to conceal T-Strike preparation in strike jamb.

Borrowed Lite
A glazed wall area not connected to a door opening.

Cased Opening
A three sided frame without hinge or strike preparations. Note: Must specify with or without stop when ordering.

Casing
Moulding used as framing around a window or door. Also referred to as Trim.

Closer Reinforcement Bracket
Reinforcement brackets used to provide additional strength for the attachment of closers, door guards, etc.

Communicating Frame
Double rabbeted frame with both rabbets prepared for single-swing doors. Doors swing in opposite directions. Also available are both doors may be of the same hand (must specify at time of order.)

Door Clearance
Although this is a broad term, it usually refers to the space between the top of the door and header rabbet or bottom of the door and finished floor. This is accomplished by over sizing the uprights, relative to the actual height of the door.

Our standard clearance both above and below the door are 3/32". When a frame order is received we automatically add 3/32" for the top and 3/32" for the bottom. For example when a 6'-8" frame is ordered we supply uprights measuring 6'-8 3/16".

If a different clearance is required, it must be specified when ordering. This would be the case where something other than the standard 3/32" space above the door is required or allowance for a threshold or carpeting.

The term Door Clearance is far more complicated when referring to the width of the assembly.

With Wood Doors, clearance is typically achieved by under sizing the door width and bevelling the edge of the door. For example when a 3'-0" frame is ordered we supply a header measuring 3'-0". The actual door width would be approximately 2'-11 13/16".

With Steel Doors, things become far more complicated. Some steel doors are undersized in width and others are not. Some recess the hinges, others flush mount the hinges. Flush mounting the hinge creates extra clearance between the hinge jamb and edge of door while moving the door towards the strike jamb. This makes it necessary to lengthen the header in order to restore clearance between the door and strike jamb. Additionally Steel Doors never have bevelled edges for clearance.

Door Closer
A mechanical door hardware device that is used to close a door after it has been opened. A door closer can be manual or automatic. Door closers are essential in commercial settings as they are required to adhere to fire security standards. There are various types of door closers such as overhead, sourface-mounted and jamb-mounted. Door Closers can also be configured to close a door immediately after it has been opened or close after a set period of time.

Door Guard
A security device commonly used in hotels to restrict entry into the room while it is occupied. We will prepare the casing for this hardware upon request. A TA-10 reinforcement bracket is recommended for this application to support the casing and assure a strong anchor point for the Door Guard.

Double Acting
Refers to a door that can swing both ways. This requires the use of Double Acting Hinges. We recommend using a No-Stop Frame with a TA-25 Multi-Purpose Reinforcement Brackets behind the hinge jamb for hinge attachment.

Double Egress Frame
A double door frame prepared to receive two single-acting doors swinging in opposite directions. Timely must utilize a Double Egress Mullion to fabricate this type of frame.

Double Egress Mullion
Mullion used to divide pairs of doors in some types of double egress frames.

Double Rabbet Frame
Frame having recesses capable of receiving doors on both sides of stop. Normally only one recess is prepared for a door, unless the frame will be used as a communicator.

Double Swing Frame
See: Pair Frame.

Drywall Frame
Frame designed to be installed on a wall composed of steel or wood studs with gypsum board or other facing material. As opposed to wet plaster or masonry finishing. It is installed after the wall is erected.

Dutch Door Frame
Frame prepared for Dutch door, one above the other. Usually equipped so both leaves can be operated independently. Lower leaf frequently has a service shelf.

Eclipse Doors
An eclipse door system is made up of three or more folding doors. They are often found in upscale residential areas and are essentially a combination of bi-folding doors.

Emboss
Pressing a hardware preparation in the frame with a punch press.

Face
Exposed part of frame parallel to face of wall.

Filler Plate
A blank strike plate used to fill embossed (mortised) cut-outs.

Fixed Transom
Panel or glass lite above door opening which is inoperable.

Floor Channel
A piece of mullion insert material placed on the floor to anchor a sidelite sill. This material is the same as mullion insert no stop and is 2" longer than the sidelite sill.

Floor Clearance
Clearance between bottom of frame and bottom of door. Also see Door Clearance.

Folding Door
See: Accordion or Bi-Fold Doors.

Frame Clearance
The clearance between the door and the stop on the frame to accommodate weather-stripping, smoke gasket, silencers etc. See: Hinge Backset.

Frame Gasket
See: Smoke Gasket.

Fullbound
See: Borrowed Lite.

Glass Area
The actual exposed glass area after all stops have been applied. This is the area referenced in fire ratings.

Glass Stop
Metal channel screwed to the frame which holds glass in place.

Glazed Opening
Any opening in a door or wall that contains glass.

Glazing Stop (Glazing Bead)
See: Glass Stop

Handing
Term used to designate direction in which door swings.

Header
The main horizontal member of the frame, forming the top of the window, transom or door frame.

Hinge Backset
There are two types of Hinge Backsets. One that refers to the distance from edge of the hinge to the stop of the frame. The second refers to the distance from the edge of the hinge to the edge of the door.

The difference between these two backsets results in what is called Frame Clearance. For example if the hinge backset on the frame is 3/8" and the hinge backset on the door is 1/4" then the clearance between the door and the stop is 1/8".

Hinge Jamb
Vertical member of frame prepared for installation of hinges.

Hinge Reinforcement
Reinforcement bracket mounted behind hinge preparation on jamb.

Hospital Stop (Terminated Stop)
A stop which terminates above floor line is closed with a 45 or 90 degree angle.

Inside Dimension (I.D.)
The dimension between two frame members, measured from rabbet to rabbet. Often the I.D. is measured to determine what size glass to order for a glazed opening. Normally, actual glass size is 1/8" smaller then the I.D. on all sides to allow for ease of installation. (Consult glass manufacturer)

Jamb
The main vertical members forming the sides of a window or door frame.

Jamb Depth
Overall width of frame section, also referred to as throat dimension. This is equal to the width of the wall the frame will be required to sleeve over.

Kick Plate
A protective piece of metal that is attached to the bottom of a door. Kick plates are named as such as they are often kicked in order to open the door they are attached to.

Knocked Down (KD) Frame
Door frame furnished by manufacturer in three or more basic parts for assembly in the field.

Labelled Frame
Frame that conforms to all applicable requirements and procedures of governing labelling authority and bears their identification label. Usually referring to a frame with a Fire Label.

Lock Jamb
See: Strike Jamb.

Masonry Opening
An opening for a door frame in a block or brick wall. Our frame can be attached by wrapping the wall with the frame in the usual manner and fastening with Tap-Con concrete screws. As another option the frame can be attached to a wood or metal sub-buck secured to the wall.

Moulding
See: Casing

Mortise
Machining and reinforcing a preparation into door or frame for attachment of hardware. With our frame we do not machine our preparations, we use a process called embossing.

Mortise Lock
A lock which is cut into the door and is stronger and more versatile than a bored cylindrical lock. A mortise lock set is constructed from a lock body, lock trim, strike plate and the keyed cylinder. Mortise locks are becoming more common in commercial and upscale residential projects.

Mullion
A structural separation between glazed areas or glazed area and door area. May occur both horizontally or vertically.

They are fabricated from a piece of standard frame material and a piece of mullion insert material. These pieces are screwed together back to back, making a closed frame section.

Mullion Insert
A piece of frame material manufactured .100 inch narrower to be inserted in a standard frame section to form a mullion.

Mute
(Same as Rubber Silencer)

Mutton
Word often misused to refer to mullions. The only difference between Muttons and Mullions are that Muttons visually separate glazed areas, where Mullions structurally separate them.

No Stop
A piece of frame material that is flat where the door would normally be. When glazing with no stop material, glass stop must be used both sides of the glass.

Opening Size
Size of frame opening measured between rabbets horizontally and between top rabbet and finished floor vertically.

Outside Dimension (O.D.)
The dimension measured from the very outside point of the casing to the opposite outside point.

Pair Frame
Frame prepared for a pair of single-acting doors, both of which swing in the same direction.

Panic Bar
Also known as a crash bar or a push bar, a panic bar is an exit device that is used to open a door. A panic bar is a spring loaded mechanism that opens a door by unlatching it when the bar is pushed. These are required in commercial buildings at fire and emergency exits in order to meet fire safety standards. Von Duprin is the originator of the panic bar producing the first panic bar style door mechanism following a tragic fire which killed hundreds inside a movie theatre.

Pocket Door Frame
Frame designed to allow door to slide inside pocket in wall. We supply only the J-Channel, the No Stop piece and the casing. This trims out the cage assembly that consists of the overhead track and sliding door.

Pull Plates and Push Plates
A metal piece of door hardware that is attached to the door. Pull plates have a handle attached to the plate in order to pull the door open, whereas a push plate is a flat piece of metal which protects the door from multiple strain.

Protective Film
A sheet of film which is attached to glass in order to strengthen it from damage or used for asthetic appeal.

Push Pull
A frame without preparation for a strike.

Rabbet
The recess or offset formed in the frame to receive door.

Reveal
The Hollow Metal Industry refers to the distance from the face of the frame to the face of the finished wall. When using this term we refer to the distance from the rabbet to the edge of the casing.

Rough Opening
The opening in a wall before the finished materials are applied.

Rubber Silencer
A part attached to the stop on a frame to cushion the closing of a door.

Sidelite
A glazed area that is connected to a door opening.

Silencer
(Same as Rubber Silencer)

Sill (Frame)
Bottom horizontal member of borrowed lite or sidelite. We supply a header for this piece, it is a sill in name only.

Sill Anchor
A piece of No-Stop Insert Material attached to the floor, providing a secure place to anchor sill. This is only required with full height sidelites. In this type of application the Strike Mullion relies on its attachment to the sill for its strength. It is not recommended to use light gauge steel studs in this situation.

Single Rabbet Frame
Frame having only one recess to receive door. Usually used with jambs to narrow to accommodate more than one rabbet.

Single Swing Frame
Frame prepared for one swing door.

Sliding Doors
See: Bi-Pass Doors.

Stick Material
Linear lengths of frame sections used for fabrication of transom/sidelite frames.

Stop
Part of frame against which door closes.

Strike Jamb
Vertical member of frame prepared for installation of lock strike.

Strike Preparation
Refers to emboss in frame to accept strike plate.

Stub Wall
A minimum wall requirement, needed to attach the frame.

Sub Buck (Rough Buck)
A sub-frame consisting of metal channel or wood attached to an existing wall. This provides a surface to which the finished frame is attached.

Swing
Usually used as a supplemental word with hand e.g., right hand swing.

Tip to Tip
(Same as O.D.)

Transom
A frame area immediately above a door opening and containing fixed glass, an operating sash, panel or other filler.

Transom Bar
See: Transom Mullion.

Transom Frame
Door frame having transom mullion to allow for glass, panel or louver above door opening.

Transom Mullion
The mullion that separates the transom from the door.

Trim
See: Casing

Under Cut
See: Floor Clearance.

Wall Size (Throat Opening)
The finished wall width after wall coverings are applied.

Weather-Stripping
A seal used around the door opening for protection against weather or for soundproofing (Also known as Smoke Gasket). Pemko is a leader in weather stripping manufacturing.