GENERAL: Furnish and install Bommer mailboxes and accessories in quantities and at locations indicated on drawings.

U.S.P.S REGULATIONS: Materials sizes construction and installation shall comply with all current U.S.P.S. regulations.

LOCKS: Each mail compartment door shall be provided with a lock keyed different from all other locks supplied for the project. A minimum of 1,000 key changes shall be available for the type lock supplied. Locks shall be:
(a) 5-pin tumbler cam type and shall be supplied with __ change keys per lock.

(b) spring bolt type which automatically latches when door is closed and shall be controlled by a 5-pin tumbler cylinder furnished with __ change keys per lock.

(c) spring bolt type which automatically latches when door is closed and shall be controlled by cylinders keyed into the building keying system. Cylinders adapted to fit mailbox doors and locks are specified to be furnished by the hardware supplier and shall be installed in doors by the mailbox manufacturer.

KEY KEEPER (model 5621 key keeper shown at left)
A Bommer No. _____ Key Keeper with ____ finish shall be provided at the entrance door to lobby.

LETTER DROP: A Bommer model 402 Letter Drop with ____ finish shall be provided at location indicated on drawings.

MAIL COLLECTION BOX: A Bommer No. _____ mail collection box with ____ finish shall be provided at location indicated on drawings.

QUANTITIES AND ARRANGEMENT OF MAILBOXES shall be as indicated on construction drawings. Shop drawings showing fabrication and installation details shall be supplied for approval prior to fabrication of mailboxes.

CONSTRUCTION: Mail compartments shall be double-wall type made of sheet aluminum. Frame members shall be heavy gauge extruded aluminum sections. Compartment doors shall be extruded aluminum not less than .156" thick reinforced at each edge with integral ribs. Doors shall swing on concealed pivots.

TYPE: Mailboxes shall be Bommer ______ Series Model No. ____ horizontal type. Units shall be:
(a) front loading. The master door shall be hinged to the units with a continuous stainless steel hinge. Single point locking shall be provided for master doors 4 or less standard compartments high; a spring-actuated latch at top and bottom shall be provided for master doors of greater height to provide 3-point locking. Access to latch shall be through one compartment door reserved for and designed to accommodate a lock supplied by the U.S.P.S.

Note: For mailboxes not serviced by the U.S.P.S. substitute the following for the last sentence of above paragraph:

Access to latch shall be through one compartment door and lock for this door shall be ... (1) 5-pin cam type ... (2) same type specified for doors of mail compartments.

(b) rear loading. Rear cover shall be made of sheet aluminum not less than .050" thick formed with a return at edges to provide rigidity and secured with latch bolts.

LOCKS: Bommer offers three (3) additional locks for horizontal mailboxes:
(a) removable core cylinder type. Complete lock assembly and removable core cylinders adapted to fit mailbox doors are specified to be furnished by the hardware supplier and shall be installed in doors by the mailbox manufacturer.

(b) combination type with spring latch bolt. Locks shall be 3-digit single dial type with automatic throw-off. Note: Combination locks are not approved for use on mailboxes serviced by employees of the U.S.P.S.

(c) 5-pin tumbler lock with high security 4-point locking system shall be supplied with 1 000 change keys per lock.

COMPARTMENT IDENTIFICATION: Each compartment shall be equipped with a channel type holder to accommodate a name card for identifying the tenant using the box. Each door shall be:
(a) provided with a slot 5/8" high by 2" wide fitted with a transparent plastic cover and steel back plate and supplied with a standard cardboard strip on which room or apartment number can be printed by owner.

(b) supplied with room or apartment numbers 1/2" high engraved into face of door. Numbers shall be as directed by the architect or owner.

(c) provided with a slot 5/8" high and 2" wide fitted with a transparent plastic cover and steel back plate and supplied with a laminated black plastic strip engraved with white numbers. Numbers shall be as directed by the architect or owner.

(d) supplied with a 1-1/8" high x 2-1/2" wide x 3/16" thick Plexiglas window with room or apartment number 1/2" high engraved in window. Numbers shall be as directed by architect or owner. (Note: Windows are not approved for use in units serviced by employees of the U.S.P.S.)

TRIM: Peripheral trim 9/16" x 1-1/2" snap-on type extruded aluminum to match mailboxes shall be supplied with mailbox units.

DIRECTORIES Shall be Bommer 6900 series designed to match horizontal mailboxes. Units shall be:
(a) top mounted type ___ of same width as mailboxes.

(b) side mounted or separate type 6921 of same height as mailboxes. A sufficient number of directory panels shall be supplied to provide one 3/8" name line per mail compartment plus 40 percent.

FINISH: Fronts of compartment door units shall: (a) be natural anodized aluminum 628. (b) have a ____ finish.

INSTALLATION: Mailbox units and accessories shall be installed in accurately framed openings with units plumb and adequately secured in position. Miscellaneous blocking and trim required for proper installation shall be furnished and installed by the contractor.

CONSTRUCTION
Each mailbox shall consist of 3 to 7 compartments enclosed within a wall box. Both the compartments and wall box shall be constructed of not less than .028" galvanized and chromated steel riveted and spot welded. Compartment doors and exposed frame members shall be made of extruded and anodized aluminum not less than .085" thick. Doors shall swing on concealed pivots. All exposed surfaces shall have a ___ finish.

MOUNTING FRAMES: (Optional: for use where recessed mounting is not practical.)
Mounting frames shall be supplied for all mailbox units. Frames shall be:
(a) full-surface type Bommer No. 9341-X where X indicates number of compartments. For example 9341-7 = 7 gang.
(b) semi-recess type Bommer No. 9434-X where X indicates number of compartments. For example 9343-4 = 4 gang.

ALPHABETICAL DIRECTORIES (Required in all apartment buildings having 15 or more mailbox compartments.)
Alphabetical Directory shall be Lee Dan model AD-____. Directory shall be provided in a separate frame or receptacle Lee Dan model AD-____made of aluminum and designed for surface installation.

INTERCOM LOBBY PANELS
Intercom Lobby Panels shall be Lee Dan model ________ and shall be fabricated from ___ finish aluminum extrusions, or high grade (low carbon) stainless steel, or solid polished brass. Quantities and arrangement of panels shall be as indicated on construction drawings. Panels shall be supplied complete with push-buttons as indicated.

INSTALLATION
Installation of units with push-buttons and speaker panels shall be coordinated with installation of wiring speakers etc. specified under electrical sections of the specification.