SILLS & ASTRAGALS
Precision Series Door Sills
Offering customizable threshold options, the Precision Series Sills suit a wide range of applications with in-swing fixed, out-swing bumper, ADA-compliant saddle, and extender styles. The ADA saddle configuration is designed to meet the ½-inch maximum threshold height required at accessible entrances, making the series a versatile choice for code-sensitive residential and commercial projects. Engineered for a durable, weather-tight seal and available in multiple configurations, the Precision Series delivers reliable performance across standard and accessibility-driven door assemblies.
3 Color Options
4+ Machining Options
10 Year Warranty
Sizes
Out-Swing Bumper
Widths: 5-5/8"
Lengths: 2'8", 3'0", 6'0"
In-Swing Fixed
Widths: 4-9/16"
Lengths: 2'8", 3'0", 6'0"
ADA Compliant
Widths: 5", 7"
Lengths: 2'8", 3'0", 6'0"
Extenders
Widths: 3/4", 2"
Lengths: 2'8", 3'0", 6'0"
Colors
Aluminum Deck Colors: Mill, Bronze
Extruded Cap Colors: Black
Substrate Options
Machining and Customization
CTI components are machined in-house to precise, repeatable tolerances and arrive prepped and ready to install.
Available operations include:
Sill Notching
Notched sill ends for a precise fit around the frame
Sill Cutting
Sills cut to your exact opening width, no field trimming
Continuous Sill Configurations
Available for single, double, and triple units, sidelites, and center-hinge applications
Sill Extenders
Widen the sill to fit deeper jamb depths and wall thicknesses
Frequently Asked Questions
Are Precision Series Sills ADA compliant?
Yes. The Precision Series ADA-compliant saddle configuration is designed to meet the 1/2-inch maximum threshold height required at accessible entrances.
What threshold styles does the Precision Series offer?
The Precision Series offers in-swing fixed, out-swing bumper, ADA-compliant saddle, and extender styles.
What projects are Precision Series Sills suited to?
They are a versatile choice for standard and accessibility-driven residential and commercial projects, including code-sensitive applications.
Is this product covered by a warranty?
Yes. Every CTI product carries a 10-Year Manufactured Defect Warranty, ensuring it is free from material and workmanship defects under normal use.
Related Products
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Flex Series Door Sills
Ideal for residential or commercial entryways, the Flex Series Sill offers adjustable and customizable features to fit each doorway's configuration. Choose between in-swing adjustable or out-swing bumper styles.
Door Astragals
CTI's proprietary door astragals seal and secure the meeting point of double doors, delivering enhanced weather resistance and security. Part of the Apex Door System™.
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Technical Details and Resources
Each CTI product comes with a 10 Year Manufactured Defect Warranty, ensuring they are free from material and workmanship defects under normal use for the product's lifetime. This commitment to quality offers you peace of mind and guarantees that you are investing in products built to last. You can view our product-specific warranties below.