Technician from behind adjusting a surface door closer

LCN

Grand Opening: Up to 20% Off. Valid for the grand opening period through December 31, 2026. One offer per job. Offers cannot be combined. No discount on emergency, lockout, or after-hours service, car keys / automotive, or service calls.

How Capital Sentinel handles LCN

LCN is closers hardware we sell and service. Surface and concealed door closers.

Bring the existing key, a photo of the lock edge, and the door thickness if you know it. A LCN template fails when the door is thinner or thicker than the sheet assumes.

What to compare in the showroom

You can compare LCN by finish, function, and how it fits the door.

LCN is chosen with you in the showroom. For LCN, the 15% tier applies only when the scope is a smart lock, a door closer, a panic bar, or a high-security upgrade. Confirm it on the offer-terms page before you book.

Field notes

For LCN, LCN in Walter Reed, Washington, DC is common on Georgia Avenue. New hardware and older institutional doors both appear. Buildings on Georgia Avenue are new townhouses and reused institutional buildings. For LCN in Walter Reed, Washington, DC, a typical opening is 32-inch, 1-3/8-inch, right-hand, 622 matte black on Georgia Avenue. LCN is the usual start for LCN in Walter Reed, Washington, DC, and the matching strike is the backup on Georgia Avenue. The trouble with LCN on Georgia Avenue is “the wrong door thickness.” In Walter Reed, Washington, DC, the technician will check the drilling guide. When it applies, the manufacturer's drilling guide guides LCN in Walter Reed, Washington, DC. LCN in Walter Reed, Washington, DC needs a photo of the door on Georgia Avenue. The Georgia Avenue opening in Walter Reed, Washington, DC is measured before LCN is priced. Call (202) 900-5625 about LCN on Georgia Avenue in Walter Reed, Washington, DC.

For LCN, LCN in Tenleytown, Washington, DC is common on Wisconsin Avenue. School doors and apartment lobbies are both nearby. Buildings on Wisconsin Avenue are apartments, schools, and neighborhood retail. For LCN in Tenleytown, Washington, DC, a typical opening is 36-inch, 1-3/8-inch, left-hand reverse, 622 matte black on Wisconsin Avenue. the matching strike is the usual start for LCN in Tenleytown, Washington, DC, and the correct hand is the backup on Wisconsin Avenue. The trouble with LCN on Wisconsin Avenue is “the wrong hand.” In Tenleytown, Washington, DC, the technician will confirm the keyway. When it applies, key control rules guides LCN in Tenleytown, Washington, DC. LCN in Tenleytown, Washington, DC needs a photo of the door on Wisconsin Avenue. Ask for LCN in Tenleytown, Washington, DC with a photo of the door on Wisconsin Avenue. Call (202) 900-5625 about LCN on Wisconsin Avenue in Tenleytown, Washington, DC.

For LCN, LCN in Colesville, Maryland is common on New Hampshire Avenue. Residential deadbolts and small-shop doors. Buildings on New Hampshire Avenue are houses and neighborhood retail. For LCN in Colesville, Maryland, a typical opening is 34-inch, 1-3/8-inch, left-hand reverse, 613 bronze on New Hampshire Avenue. the correct hand is the usual start for LCN in Colesville, Maryland, and the listed finish is the backup on New Hampshire Avenue. The trouble with LCN on New Hampshire Avenue is “a mixed finish.” In Colesville, Maryland, the technician will protect the finish. When it applies, the manufacturer's drilling guide guides LCN in Colesville, Maryland. LCN in Colesville, Maryland needs a photo of the door on New Hampshire Avenue. A Colesville, Maryland visit for LCN starts with the door on New Hampshire Avenue, not a guess from a catalog. Call (202) 900-5625 about LCN on New Hampshire Avenue in Colesville, Maryland.

For LCN, LCN in South Kensington, Maryland is common on Connecticut Avenue. A quiet residential hardware pattern. Buildings on Connecticut Avenue are houses and small institutions. For LCN in South Kensington, Maryland, a typical opening is 42-inch, 1-3/4-inch, left-hand, 622 matte black on Connecticut Avenue. the listed finish is the usual start for LCN in South Kensington, Maryland, and LCN is the backup on Connecticut Avenue. The trouble with LCN on Connecticut Avenue is “a missing restricted blank.” In South Kensington, Maryland, the technician will test the key. When it applies, key control rules guides LCN in South Kensington, Maryland. LCN in South Kensington, Maryland needs a photo of the door on Connecticut Avenue. The Connecticut Avenue opening in South Kensington, Maryland is measured before LCN is priced. Call (202) 900-5625 about LCN on Connecticut Avenue in South Kensington, Maryland.

For LCN, LCN in Springfield, Virginia is common on Franconia Road. Mall-edge doors and house locks. Buildings on Franconia Road are houses, apartments, and retail pads. For LCN in Springfield, Virginia, a typical opening is 30-inch, 1-3/4-inch, left-hand, 613 bronze on Franconia Road. LCN is the usual start for LCN in Springfield, Virginia, and the matching strike is the backup on Franconia Road. The trouble with LCN on Franconia Road is “the wrong door thickness.” In Springfield, Virginia, the technician will check the drilling guide. When it applies, the manufacturer's drilling guide guides LCN in Springfield, Virginia. LCN in Springfield, Virginia needs a photo of the door on Franconia Road. Ask for LCN in Springfield, Virginia with a photo of the door on Franconia Road. Call (202) 900-5625 about LCN on Franconia Road in Springfield, Virginia.

For LCN, LCN in 14th Street at Spring Road, Washington, DC is common on 14th Street. Mixed residential lobbies and shop doors share the same sidewalks. Buildings on 14th Street are apartment buildings and corner retail. For LCN in 14th Street at Spring Road, Washington, DC, a typical opening is 36-inch, 2-1/4-inch, right-hand reverse, 605 brass on 14th Street. the matching strike is the usual start for LCN in 14th Street at Spring Road, Washington, DC, and the correct hand is the backup on 14th Street. The trouble with LCN on 14th Street is “the wrong hand.” In 14th Street at Spring Road, Washington, DC, the technician will confirm the keyway. When it applies, key control rules guides LCN in 14th Street at Spring Road, Washington, DC. LCN in 14th Street at Spring Road, Washington, DC needs a photo of the door on 14th Street. A 14th Street at Spring Road, Washington, DC visit for LCN starts with the door on 14th Street, not a guess from a catalog. Call (202) 900-5625 about LCN on 14th Street in 14th Street at Spring Road, Washington, DC.

For LCN, LCN in Mount Vernon Triangle, Washington, DC is common on Massachusetts Avenue. Lobby access control is the usual first conversation. Buildings on Massachusetts Avenue are new apartment towers and older commercial buildings. For LCN in Mount Vernon Triangle, Washington, DC, a typical opening is 32-inch, 2-inch, left-hand reverse, 619 nickel on Massachusetts Avenue. the correct hand is the usual start for LCN in Mount Vernon Triangle, Washington, DC, and the listed finish is the backup on Massachusetts Avenue. The trouble with LCN on Massachusetts Avenue is “a mixed finish.” In Mount Vernon Triangle, Washington, DC, the technician will protect the finish. When it applies, the manufacturer's drilling guide guides LCN in Mount Vernon Triangle, Washington, DC. LCN in Mount Vernon Triangle, Washington, DC needs a photo of the door on Massachusetts Avenue. The Massachusetts Avenue opening in Mount Vernon Triangle, Washington, DC is measured before LCN is priced. Call (202) 900-5625 about LCN on Massachusetts Avenue in Mount Vernon Triangle, Washington, DC.

For LCN, LCN in Adelphi, Maryland is common on Adelphi Road. Turnover rekeys are a steady part of the housing stock. Buildings on Adelphi Road are garden apartments and houses. For LCN in Adelphi, Maryland, a typical opening is 32-inch, 2-1/4-inch, right-hand, 626 satin chrome on Adelphi Road. the listed finish is the usual start for LCN in Adelphi, Maryland, and LCN is the backup on Adelphi Road. The trouble with LCN on Adelphi Road is “a missing restricted blank.” In Adelphi, Maryland, the technician will test the key. When it applies, key control rules guides LCN in Adelphi, Maryland. LCN in Adelphi, Maryland needs a photo of the door on Adelphi Road. A Adelphi, Maryland visit for LCN starts with the door on Adelphi Road, not a guess from a catalog. Call (202) 900-5625 about LCN on Adelphi Road in Adelphi, Maryland.

For LCN, LCN in Hillandale, Maryland is common on New Hampshire Avenue. Repeated lobby use wears closers and strikes. Buildings on New Hampshire Avenue are garden apartments and retail pads. For LCN in Hillandale, Maryland, a typical opening is 34-inch, 2-inch, right-hand, 613 bronze on New Hampshire Avenue. LCN is the usual start for LCN in Hillandale, Maryland, and the matching strike is the backup on New Hampshire Avenue. The trouble with LCN on New Hampshire Avenue is “the wrong door thickness.” In Hillandale, Maryland, the technician will check the drilling guide. When it applies, the manufacturer's drilling guide guides LCN in Hillandale, Maryland. LCN in Hillandale, Maryland needs a photo of the door on New Hampshire Avenue. A Hillandale, Maryland visit for LCN starts with the door on New Hampshire Avenue, not a guess from a catalog. Call (202) 900-5625 about LCN on New Hampshire Avenue in Hillandale, Maryland.

For LCN, LCN in Alexandria, Virginia is common on King Street. Historic doors need care before new bores. Buildings on King Street are historic townhouses and newer buildings in Potomac Yard. For LCN in Alexandria, Virginia, a typical opening is 32-inch, 1-3/8-inch, left-hand, 626 satin chrome on King Street. the matching strike is the usual start for LCN in Alexandria, Virginia, and the correct hand is the backup on King Street. The trouble with LCN on King Street is “the wrong hand.” In Alexandria, Virginia, the technician will confirm the keyway. When it applies, key control rules guides LCN in Alexandria, Virginia. LCN in Alexandria, Virginia needs a photo of the door on King Street. Ask for LCN in Alexandria, Virginia with a photo of the door on King Street. Call (202) 900-5625 about LCN on King Street in Alexandria, Virginia.

For LCN, LCN in Pentagon City, Virginia is common on Army Navy Drive. Mall doors and apartment hardware. Buildings on Army Navy Drive are retail and residential towers. For LCN in Pentagon City, Virginia, a typical opening is 30-inch, 1-3/8-inch, left-hand, 613 bronze on Army Navy Drive. the correct hand is the usual start for LCN in Pentagon City, Virginia, and the listed finish is the backup on Army Navy Drive. The trouble with LCN on Army Navy Drive is “a mixed finish.” In Pentagon City, Virginia, the technician will protect the finish. When it applies, the manufacturer's drilling guide guides LCN in Pentagon City, Virginia. LCN in Pentagon City, Virginia needs a photo of the door on Army Navy Drive. Ask for LCN in Pentagon City, Virginia with a photo of the door on Army Navy Drive. Call (202) 900-5625 about LCN on Army Navy Drive in Pentagon City, Virginia.

For LCN, LCN in Dupont Circle, Washington, DC is common on Connecticut Avenue. Formal doors, mortise locks, and strict finishes are typical. Buildings on Connecticut Avenue are townhouses, embassies, and mansion conversions. For LCN in Dupont Circle, Washington, DC, a typical opening is 34-inch, 2-inch, left-hand, 605 brass on Connecticut Avenue. the listed finish is the usual start for LCN in Dupont Circle, Washington, DC, and LCN is the backup on Connecticut Avenue. The trouble with LCN on Connecticut Avenue is “a missing restricted blank.” In Dupont Circle, Washington, DC, the technician will test the key. When it applies, key control rules guides LCN in Dupont Circle, Washington, DC. LCN in Dupont Circle, Washington, DC needs a photo of the door on Connecticut Avenue. LCN on Connecticut Avenue in Dupont Circle, Washington, DC is scheduled after the door is seen. Call (202) 900-5625 about LCN on Connecticut Avenue in Dupont Circle, Washington, DC.

Frequent questions

Can I see LCN hardware before I book?

Yes. Come by the showroom and look at LCN hardware before you book LCN.

Does the grand opening discount cover LCN?

For LCN, the 15% tier applies only to a smart lock, closer, panic bar, or high-security upgrade. One offer per job. See the offer-terms page for the full list, valid through December 31, 2026.

How do I reach the shop?

For LCN, call (202) 900-5625 or email capitolsentinel@gmail.com. Directions and hours are on the contact page.

What should I bring?

For LCN, bring the existing key, a photo of the lock edge, and the door thickness if you know it. Showroom hours and the 24-hour emergency line are different, and Monday visits are by appointment.

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