SILLS & ASTRAGALS
Door Astragals
CTI's proprietary astragals seal and secure the meeting point of double-door assemblies, delivering enhanced performance, weather resistance, and security where paired doors come together. Engineered to integrate with the Apex Door System™, they provide a tight, durable seal that helps block drafts, moisture, and noise while reinforcing the security of the opening. Available to coordinate with CTI frames, sills, and weatherproofing, our astragals complete the exterior door package with a high-performance solution at the center of paired doors.
2 Finish Options
2 Machining Options
10 Year Warranty
Sizes
Lengths: 79", 79-1/4", 95", 95-1/4"
Colors
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:
RH
Configured for right-hand door handing
LH
Configured for left-hand door handing
Frequently Asked Questions
What is a door astragal?
An astragal seals and secures the meeting point of a pair of double doors, where the two door leaves come together.
What do CTI astragals provide?
CTI's proprietary astragals deliver enhanced performance, weather resistance, and security at the center of double-door assemblies, helping block drafts, moisture, and noise.
Do astragals integrate with the Apex Door System™?
Yes. CTI astragals are engineered to integrate with the Apex Door System™ and coordinate with frames, sills, and weatherproofing.
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.
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.