SILLS & ASTRAGALS
Sidelite Seat
The sidelite seat provides a stable, weather-tight base for sidelite units where they meet the sill, sealing a common point of water infiltration in door systems that include sidelites. By creating a secure seat beneath the sidelite, it helps block moisture, drafts, and air leakage at the base of the fixed unit while supporting a clean, uniform aesthetic.
1 Size
2 Color Options
10 Year Warranty
Sizes
Length: 84"
Colors
Woodgrain, 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:
Frequently Asked Questions
What is a sidelite seat?
The sidelite seat provides a stable, weather-tight base for sidelite units where they meet the sill, sealing a common point of water infiltration.
What does the sidelite seat do?
By creating a secure seat beneath the sidelite, it helps block moisture, drafts, and air leakage at the base of the fixed unit while supporting a precise fit.
What does the sidelite seat integrate with?
It is designed to integrate with CTI sills and weatherproofing to complete the weather seal across door-and-sidelite configurations.
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

Precision Series Door Sills
Offering customizable threshold options, the Precision Series Sills are ideal for various applications with choices like in-swing fixed, out-swing bumper, ADA-compliant saddle, or extender 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.



