3/4-inch Trim Inside Corners 10-Pack


Our 3/4-inch Trim Inside Corners 10-Pack make finishing the installation of InstaTrim flexible trim strips easy. These innovative corners close the gaps of 90-degree inside and outside corners. The end caps finish exposed trim ends to create a clean, finished look.

Inside and outside corner caps slip over the end of the InstaTrim strips at the corner so you no longer need to cut a precise compound edge to finish the corners. The end caps are the perfect solution to covering exposed trim ends where the InstaTrim does not butt to another surface.

  • FINISH CORNERS - These innovative corners close the gaps of 90-degree inside and outside corners to create a clean, finished look. Great for windows, counters, flooring, and more, these trim pieces cover the corner gap between two pieces of InstaTrim flexible trim.
  • EASY APPLICATION - Don't waste another afternoon on a frustrating DIY project with confusing instructions. InstaTrim has easy-to-follow, clear instructions that will make your next home improvement project a breeze. These corner and end pieces work perfectly with InstaTrim 3/4" flexible adhesive trim. Simply slide the ends of the InstaTrim strips between the “face” and the “tail” of the cap piece at the corner - that's it! Then, sit back and enjoy the professional, finished look.
  • NO MESS, NO STRESS - Traditional caulking can be messy, even for people who have used the product before. InstaTrim takes the mess and hassle out of caulking projects, while still providing great results.
  • DURABLE AND HIGH QUALITY - InstaTrim's patented formula provides a strong, dependable seal every time. For us, quality is always our top priority. These sturdy, corner caulking pieces neatly finish corners and are long-lasting. When it comes to your home, you don't want to settle for anything but the best.
  • MADE IN THE USA 🇺🇸 - At InstaTrim, we pride ourselves in manufacturing the best trim and caulking alternatives here in the USA. Our family of patented products works together to create long-lasting results that look clean and professional. Experience the quality of American manufacturing and see the difference it can make in your home. Our family-owned business appreciates our loyal customers and works hard to make sure they are always satisfied with our products.


1 Clean surface and let dry.

2 Peel back the liner.

3 Press firmly into the gap.

4 Trim the finished edge, and voila!


InstaTrim works with all surfaces that do not have silicone or silicone residue on them, like: Granite, Laminate, Wood, Glass, Metal, and more!