Glossary of Terms

Active Door The door in a double door set that is opened first and to which a functional lockset is applied.

Backcheck A function on a door closer which provides a cushioning effect when the door is forcibly thrown open. This does not serve as a substitute for a door stop.

Backset The horizontal distance from the face of the lock to the center of the bore or cylinder hole.

Case The housing of a lock, latch or bolt

Closing Speed The speed at which the door closes from the fully open position to 15-0. This can be adjusted by the valve on most door closers.

Cylinder Barrel A cylindrical portion of the cylinder that rotates when the correct key is used.

Cylinder The assembly incorporating the key operated mechanism.

Deadbolt A lock bolt having no spring action and is operated by a key or turnsnib. When locked the bolt cannot be returned by end pressure.

Delayed Action Provides prolonged closing time to assist the passage of wheel chairs, less abled people and people with prams, shopping etc.

Double Cylinder A locking cylinder barrel controlled by a key on both the outside and inside.

Dummy Set A non functioning handle for one side of the door that has no latching or locking function. It is surface mounted to a door simply so the door has a handle to pull it open. They are generally used on closet, wardrobe or linen cupboard doors with a catch.

Edge Pull A recessed pull morticed into the edge of a sliding door which enables a user to pull out a door that is completely inside a cavity.

Fixed Pin Hinge A hinge in which the pin is fastened permanently in place, preventing separation of the two leaves.

Flush Bolt A bolt recessed flush into the edge of the inactive leaf of a pair of doors at the top and bottom to secure a door.

Handed Products A product designed or assembled for use only on right hand doors or only left hand doors, but not both (see handing below).

Hold-open A function on a door closer which enables a door to be held in the opened position until released.

Inactive Door The door in a double door set that does not contain a latch, but instead is bolted at the top and bottom to hold it stationary when shut.

Indicator Bolt A slide-action bolt installed in areas where privacy is desired (such as toilets and bathrooms) which provides visual indication that the room is occupied or vacant.

Jamb Vertical posts or pieces that together form the sides of a door or window frame.

Latch The fastening on a door that fits into the strike slot on a door jamb and is retracted from either side by the handle.

Latching Speed The speed at which the door closes from 15-0. This can be adjusted by the valve on most door closers.

Loose Pin Hinge A hinge having a removable pin to permit the two leaves of the hinge to be separated.

Mortice Lock A lock designed to be recessed into the edge of a door, rather than being mounted to its surface. It combines the latching and locking mechanism into one unit.

Nightlatch A lock with a spring activated latchbolt. Useful where you want to lock a door behind you without a key.

Non-handed The ability to reverse the product or key component to suit left or right-hand installation.

Passage Set Include a leverset and non-lockable latch bolt that allows free access through the door in both directions at all times. Appropriate for internal doors that never need to be locked (Dining Room, Laundry etc).

Power Adjustable By Spring This is where the power size on a closer can be adjusted by turning the allen key, the plates are moved in the body, compressing the spring, which increases the power size.

Power Adjustable by Position This is where the power size on a closer can be adjustable by the position on the door. You increase the strength by positioning the closer away from the hinge or pivot centre.

Privacy Set A term for locks used on bathroom and bedroom doors having an inside button or turn knob to lock the outside handle and usually an emergency function which will unlock the set from the outside.

Rebated Door A door where the leading edge is stepped.

Reversible Lock A lock with the components that can be readily adapted to enable the lock to suit door of either hand, opening in or out.

Rose The decorative backplate attached to the door lever that screws to the door surface.

Single Cylinder A locking barrel controlled by a key on the outside and a turnsnib on the inside for easy exit in an emergency.

Sliding Door A type of door installed on a sliding track that slides into a hollowed space or along a wall. Ideal for space minimisation as they eliminate the necessity to maintain clearance for the action of a swinging door. Sometimes referred to as a Pocket Door.

Spindle The drive shaft connecting the knob or lever to the latch or lock mechanism to operate the bolt.

Split Spindle A spindle having a joint in the center to allow each side of a handle to operate independently.

Strike A metal plate that receives the door bolt or latch in the door jamb when the door is closed. Also referred to as a Faceplate or Keeper.


B/S       Lock Backset                              ID       Inside Diameter                      O/S       Offset

CRS       Screw/Bolt Centre                     LH       Left Hand                              RF         Rear Fix

C/S       Lock Case Size Overall              OA      Overall Length                       RH        Right Hand

FF          Face Fixed                               OD      Outside Diameter

Care & Maintenance


The high polish of  Zanda Brass products is treated with a clear protective coating to provide durability. Brass, like sterling silver, will gradually tarnish and take on an antique appearance. Atmospheric conditions, caustic agents such as paints, or scratches from sharp objects may cause the protective coating to crack or peel causing spotting and discolorations. However, the beauty of the metal can be maintained by taking a few simple steps. Initial care for brass requires only a quick rub with Zanda Wax Polish and light buffing with a soft cloth. You may prefer to do this weekly, especially in exterior, often used or damp environments. “Blue Magic” Metal Polish is a quick, effective way of restoring mildly tarnished brassware. If heavy discoloration occurs the finish can be restored by stripping the remaining lacquer and polishing regularly with “Blue Magic”. Alternatively let it age naturally to an antique finish. The beauty of solid brass is that it can always be restored to its original lustre.

Stainless Steel

For information on care & maintenance of stainless steel products please visit:

To aid the longevity and appearance of quality Zanda  stainless steel product we recommend that it is kept clean and a metal polish such as “Blue Magic” be applied periodically. Atmospheric conditions, salt deposits, acids, caustic agents, cement or dust on construction sites all have the potential to cause discolouration to the surface. If this occurs do not be concerned as usually this is not the stainless steel itself but particles clinging to its surface. The product can be revived by following the above maintenance procedure and repeating regularly. This small amount of routine care can only preserve the elegance of your Zanda stainless steel hardware.