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Satin chrome mortise lever lockset with escutcheon plate, left-hand single cylinder

Marks USA

Marks USA 2750B/26D Satin Chrome Left Hand Mortise Lever Entry Door Lock

SKU CH-BTWD-ZTER0 MPN 2750B/26D

Satin chrome mortise lever entry lock with 1-inch backset, single-cylinder function and thru-bolted trim for left-hand doors

  • FinishSatin Chrome
  • Selling UnitBox
  • TypeMortise Lever Lock Set
  • FeaturesThinline Slim Line Lockset
  • MaterialBrass
  • Backset1 inch
  • Slim profile fits narrow stile doors with 1 inch backset
  • Satin chrome finish resists wear on brass mortise construction
  • Single cylinder function provides keyed entry outside and thumb turn inside
  • Thru-bolted lever trim ensures secure mounting on storm doors
  • Left hand configuration installs correctly on designated door swing

Mortise Lever Lock Set for Storm Doors

This Marks USA 2750B/26D lockset combines a satin chrome lever handle with a single-cylinder mortise mechanism. It is built for left-hand doors and uses a 1-inch backset throughout. The brass construction and thru-bolted trim provide a slim profile suited to narrow stile applications.

Suits Narrow Stile Doors Needing Keyed Entry

Ideal for commercial storm doors or aluminium entrances where a 1-inch backset mortise lock is specified and a lever handle is preferred. Not for doors pre-drilled for cylindrical locksets, for right-hand swing without field reversal, or for projects requiring a deadbolt throw longer than one inch.

1-Inch Backset Determines Fit

The mortise case and deadbolt both operate on a 1-inch backset, with mounting screws spaced at 8-1/4 inches and an escutcheon plate measuring 1 by 9-3/4 inches. Verify that the door preparation matches these dimensions before ordering.

Highlights

  • Slim profile fits narrow stile doors with 1 inch backset
  • Satin chrome finish resists wear on brass mortise construction
  • Single cylinder function provides keyed entry outside and thumb turn inside
  • Thru-bolted lever trim ensures secure mounting on storm doors
  • Left hand configuration installs correctly on designated door swing

Specifications

BrandMarks
Model2750B/26D
FinishSatin Chrome
Selling UnitBox
TypeMortise Lever Lock Set
FeaturesThinline Slim Line Lockset
MaterialBrass
Backset1 inch
KeyingKeyed Different
StyleLever
Series2750B
FunctionSingle Cylinder

Questions about this item

How do I install the mortise lock body with its 1-inch backset into the door pocket, and what is the common alignment mistake?

Mortise the pocket to accept the lock body, align the 1-inch backset horizontally, then secure the face plate with screws spaced 8-1/4 inches apart; the step often missed is verifying the deadbolt throws cleanly before tightening the thru-bolts.

Which parts of the satin-chrome lever trim set will need lubrication or replacement after extended use?

The spring-loaded captivated self-adjusting spindles and the single-cylinder thumb-turn mechanism should be lubricated annually; the solid brass lever handles and thru-bolted escutcheon plates rarely require replacement.

What is the first functional limit that appears when the lock is cycled continuously on a storm door?

The 1-inch deadbolt throw can bind if the door-to-frame clearance shifts under repeated slamming, causing the bolt to drag on the strike before the lever action itself wears.

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