I don't know what brand of sill I have but I took a chance and it fits great. I had to completely remove the storm door and frame to avoid cutting slots in the extension, but the clean install was worth it. I had concerns about gluing because there isn't much flat metal on the underside of the extension, but I glued it down with Gorilla Max Strength construction glue and weighted it down for 24 hours and it was rock hard. The edges still need caulking but I am very happy with the product and the results! Sorry for the mess in the photos...it rained for two days.
πͺ 3.5 Inch Self-Closing Door Hinge by AmazonBasics
10 Review
π§ Master the Art of Smooth Installation with SMARTSTANDARD Hardware Instruction Guide
10 Review
π§ HS400BP Hinge Shim Pack by EZ SHIM
10 Review
π Enhanced SEO: SMARTSTANDARD Barn Door Handle for Furniture & Commercial Door Products
10 Review
MIDI keyboard Axelvox KEY49j black
7 Review
Majority Commercial Door Products: Proximity Weigand-Compatible Readers
4 Review
Proximity Clamshell Compatable Systems Majority Commercial Door Products for Commercial Access Control
4 Review
UHPPOTE Electric Strike Door Lock Kit System With Remote Control And Fail-Secure Design
15 Review