Andersen 7191 LH Stone Operator

The Andersen 7191 LH Stone Operator is a corrosion-resistant metal window crank mechanism designed specifically for left-hand casement windows manufactured between 1966 and 1995. This vintage-compatible replacement part solves the frustrating problem of worn-out or broken window operators in older Andersen casement systems, allowing contractors to restore full functionality without replacing entire window units.

At 5.0/5.0 stars across 51 reviews, this operator delivers what contractors need most — an exact OEM match that fits right the first time. Many users noted it was an exact match for decades-old windows. For Montana homes built during the construction boom of the 1970s and 1980s, this operator keeps those quality Andersen windows operating smoothly through temperature extremes that would challenge lesser hardware.

Compatibility and Specifications

Getting the right operator means knowing exactly which Andersen window series and years you’re dealing with. This left-hand operator works with Andersen 400 Series Casement Windows and Perma-Shield Casement Windows from 1966 through 1995. The left-hand designation matters — lock on left when viewed from interior.

Specification	Value
Arm Length	9 3/8 inches (from rivet to elbow bend)
Compatible Glass Widths	19 3/4” to 67 1/16” visible glass
Weight	1.3 lbs
Material	Corrosion-resistant metal mechanism with black nylon shoe
Finish	Stone (neutral beige/tan)

The operator replaces multiple vintage models: 7191-32 (1979-1995), 7191-2 and 7198-17 (1974-1979), and 7095 (1965-1974). Those stamped numbers on the old operator tell the whole story — check them before ordering.

Compatible window sizes include C1, CXW1, CX1, and CW1 (Wide casement) designations. The wide compatibility range means one part number covers most residential casement sizes from that era.

Installation and What’s Included

Installation involves removing the old operator, aligning the new one with existing holes, and securing it with the provided screws. This is a sill-mount, screw-in installation — no drilling new holes or modifying the window frame. Required tools include just a Phillips screwdriver.

The kit includes the essentials but not everything. Included items are the straight-arm operator body, pre-installed nylon shoe, stone-colored cover, and mounting screws. The operator handle (Part #0532408), operator channel, and track must be purchased separately. This matters for complete installation planning.

The corrosion-resistant metal mechanism with black nylon shoe stands up to Montana’s freeze-thaw cycles and temperature swings better than the original hardware from decades past. That nylon shoe glides smoothly in the track without the metal-on-metal grinding that wears out channels.

Warranty and Long-Term Value

Andersen backs this operator with a 10-Year Limited Warranty covering manufacturing defects. As OEM Certified hardware that meets original manufacturer specifications for durability and operation, it’s engineered to last another few decades in those vintage window frames.

The stone color matches the neutral tones common in 1970s and 1980s construction. For Montana’s older neighborhoods full of quality homes from that era, this operator extends window life without the expense and disruption of full window replacement.

Direct OEM replacement ensures better fit than generic aftermarket parts. Generic operators often require modification, don’t operate as smoothly, and fail sooner. This Andersen part drops right in where the old one came out.

Frequently Asked Questions

Q: Will this work on right-hand casement windows? A: No. This is a Left-Hand (LH) operator with the lock on left when viewed from interior. Right-hand windows need the RH version with opposite orientation.

Q: Do I need to buy anything else to complete the installation? A: The handle must be purchased separately (Part #0532408), along with the operator channel and track if those components need replacement. The operator itself comes with mounting screws.

Q: How do I know if this fits my Andersen windows? A: Check for stamped numbers 7191-32, 7191-2, 7198-17, 7191, or 7095 on your existing operator. Measure the arm length — this model is 9 3/8 inches from rivet to elbow bend. Verify left-hand orientation and that your windows date from 1966-1995.

Q: Why are customers rating this so highly? A: Customers consistently praise the part for its perfect fit, ease of installation, and high-quality construction. Many users noted it was an exact match for decades-old windows. When a mechanical part fits perfectly after 30-40 years, that earns trust.