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Keystone Series Posts, Parts and Accessories

Gaines Manufacturing offers genuine Keystone accessories and replacement parts.  


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26 products

The Keystone Beam is a brown, rectangular cast aluminum mounting bracket with a raised, slotted plate and four holes, ideal for attaching a mailbox to a deluxe post. Plain white background.
Keystone Beam
Keystone Series Deluxe Post Horizontal Cross Beam.  Powder coat finish.  Cast aluminum.  Includes mailbox mounting plate. Will fit all Deluxe posts......
Sale price$99.00

5 colors available
Keystone Curved Arm in premium cast aluminum, elegant textured brown finish—exemplifies lasting curb appeal and refined durability.
Keystone Curved Arm
Keystone Series Deluxe Post replacement Curved Arm. Powder coat finish. Cast Aluminum. Mounting hardware included. Will fit all Deluxe posts previo......
Sale price$79.00

5 colors available
The Keystone Endcap by Gaines: elegant brown 3D cast aluminum, premium textured finish—lasting curb appeal for luxury estates.
Keystone Endcap
Keystone Series Deluxe Post End Cap replacement. Powder coat finish. Cast aluminum. Mounting hardware not included. ...
Sale price$59.00

5 colors available
The Keystone Series Door boasts a luxe powder-coated finish, arch design, and embossed approval, exuding elegance and lasting quality.
Keystone Series Door
Keystone Series Mailbox Door replacement. Powder coat finish. Includes mounting hardware. For use with shoulder-bolt and quarter-bolt door hinge ve......
Sale price$89.00

5 colors available
Gaines Manufacturing's Keystone Series cast aluminum post cuff boasts a luxe textured finish, blending durability with timeless elegance.
Decorative Post Cuff
Gaines Decorative Post Cuff  - Powder coat finish. Cast aluminum construction. Mounting hardware and instructions included. Compatible with all new......
Sale price$99.00

5 colors available
Keystone Deluxe Post Finial in rich brown cast aluminum, boasts a prestige look with superior powder coat and elegant sculpted form.
Keystone Deluxe Post Finial
Keystone Series Deluxe Post Replacement Ball - Powder coat finish. Cast aluminum construction....
Sale price$59.00

5 colors available
Gaines' Keystone Series Address Plaque, luxe brown cast aluminum with gold 850, showcases enduring elegance and upscale hardware.
Keystone Series Address Plaque
Keystone Series Address Plaque  - Powder coat finish. Cast aluminum construction. Mounting hardware included. Each Address Plaque can be personaliz......
Sale price$79.00

5 colors available
Gaines Keystone Series address plaque: premium brown cast aluminum, gold 1440 numerals; elegant bracket and screw for luxury homes.
Keystone Series Standard Address Plaque
Keystone Series Standard Address Plaque  - Powder coat finish. Cast aluminum construction. Mounting hardware included. Each Address Plaque can be p......
Sale price$99.00

5 colors available
Elegantly crafted black aluminum KS-LOCK Insert, rust-resistant; showcases keys—enhancing luxury mailboxes with security and style.
KS-LOCK/ Keystone Lockable Insert
Keystone Series Lockable Insert. Convert any Keystone Series Mailbox to a locking mailbox in seconds. For use ONLY with Keystone Series Mailboxes......
Sale price$99.00
The Keystone Newspaper Holder by Gaines: premium powder-coated metal, refined brown finish, designed for lasting elegance and curb appeal.
Keystone Newspaper Holder
Keystone Series Newspaper Holder - Powder coat finish. Aluminum construction. Compatible with all new and existing Keystone Series Deluxe, Double a......
Sale price$99.00

4 colors available
A stately, brown rectangular mailbox with a graceful curved lid and sturdy reinforced corners, exuding premium durability and elegance.
Replacement Keystone Mailbox without Accents
Keystone Series Mailbox Replacement - Powder coat finish. Cast aluminum construction. Door accent and flag sold separately. Hardware not included. ......
Sale priceFrom $289.00

5 colors available
Luxury SPRING/Keystone Door Hardware Kit—durable metal, elegant finishes, refined for upscale mailbox repair and lasting curb appeal.
SPRING / Keystone Door Hardware Kit - Spring Style
Keystone Series Mailbox Replacement Door Hardware. For use with early Keystone Series Mailbox door versions manufactured prior to 2002. Instruction......
Sale price$29.00
Gaines Manufacturing Keystone Mailbox Bolt Kit—premium metal, refined black accents; distinguished for lasting elegance and curb appeal.
BOLT KIT/ Keystone Door Hardware Kit - 1/4" Bolt Style
Keystone Series Mailbox Replacement Door Hardware. For use with current Keystone Series Mailbox door versions. Instructions included. Note: 1/4" Bo......
Sale price$29.00
Premium SBOLT KIT by Gaines: showcases elegant metal and black elements, engineered for lasting curb appeal and distinguished durability.
SBOLT KIT / Keystone Door Hardware Kit - Shoulder Bolt Style
Keystone Series Mailbox Replacement Door Hardware. For use with Keystone Series Mailbox door versions utilizing shoulder bolt attachments. Instruct......
Sale price$29.00
Premium metal spring, polished washers, and hex nut with a pristine white insert offer enduring elegance on a luxe black surface.
KS-FLAGHDW/ Keystone Flag Assembly Hardware
Keystone series replacement flag hardware. **Flag and Brass Bracket not included** ...
Sale price$15.00
Premium black magnet blocks, gold-tone L-brackets, and polished screws arranged elegantly—crafted for luxury Keystone Doors.
KS-MAGNETKIT / Replacement Magnets for Keystone Door
Replacement Magnet Kit for Keystone Series Mailboxes. Set includes two magnets, two catch plates, and attachment screws. Two-part epoxy (required) ......
Sale price$19.00
A premium brass key marked GMS in a Gaines Manufacturing Cam Lock, with a matching key, showcases elegant, durable security design.
Replacement Cam Lock
Replacement Cam Lock and Key Set. Set includes lock cylinder, attachment washer, and two keys. Fits all Gaines locking products....
Sale price$19.00
A 12oz Gaines Paint-Spray can with a premium silver finish and white cap, designed for lasting curb appeal and superior protection.
Paint-Spray 12oz Aerosol Touch-up Paint
12 oz. Aerosol Touch-Up Paint. High-quality touch-up finish in aerosol form.  Unavailable in Alaska and Hawaii ...
Sale price$19.00

5 colors available
Premium black Keystone mailbox by Gaines with gold accents, embossed details, and address—crafted for luxury estates' curb appeal.
Keystone Mailbox Lettering
Keystone Series Mailbox replacement lettering.  Marine grade weather resilient vinyl lettering for use with Keystone Series Mailboxes. Price is per......
Sale price$29.00

3 colors available
The Keystone Flag by Gaines: a premium gold-toned metal mailbox handle, shown with mounting hardware, exuding elegance and durability.
Keystone Flag
Keystone Series Mailbox replacement flag. For use with all Keystone Series Mailboxes. Polished Brass, Satin Nickel, Antique Bronze, and Red finish.......
Sale price$49.00

4 colors available
Elevate your Keystone mailbox with a solid brass Eagle Door Accent—distinctive raised design, timeless appeal, unmatched durability.
Eagle Door Accent
Update your Keystone Series mailbox with a new Eagle Plaque. This solid brass accent piece is available in five classic finishes: Polished Brass, A......
Sale price$69.00

5 colors available
Luxury solid brass Fleur de Lis Door Accent elevates your Keystone mailbox with prestige, lasting beauty, and timeless curb appeal.
Fleur de Lis Door Accent
Update your Keystone Series mailbox with a new Fleur de Lis Plaque. This solid brass accent piece is available in five classic finishes: Polished B......
Sale price$69.00

5 colors available
Premium US Mail Signature Door Accent: gold metallic script on textured brown-gray, brass elegance for discerning mailboxes.
US Mail Signature Door Accent
Update your Keystone Series mailbox with a new US Mail Signature accent. This solid brass accent piece is available in five classic finishes: Polis......
Sale price$69.00

5 colors available
Sleek aluminum Keystone Deluxe Post with finial and sculpted accents, showcasing lasting elegance and premium curb appeal.
Keystone Deluxe Post - Includes Post, Finial, Support Beam, Curve and Endcap
Keystone Series Deluxe Post - Heavy Aluminum Construction. Textured Powder Coat Finish. Includes Post, Finial, Support Beam, Curve and Endcap. Mail......
Sale price$369.00

5 colors available
The Keystone Standard Post exudes upscale appeal with its rich dark gray, premium aluminum and refined minimalist silhouette.
Keystone Standard Post - Post Only
Keystone Series Standard Post - Heavy Aluminum Construction. Textured  Powder Coat Finish. Mailbox sold separately. Designed for use with the Keyst......
Sale price$199.00

5 colors available
Premium brown textured aluminum post with elegant trim, dual white mailbox mounts, and nameplates—Keystone Series prestige.
KDD - Keystone Double Deluxe Post
Keystone Series Double Deluxe Post - Heavy Aluminum Construction. Textured Powder Coat Finish. POST SET ONLY - Mailboxes and Address Plaques sold s......
Sale price$449.00

5 colors available