3/4-inch Trim Outside Corners 10-Pack

5 reviews

Our InstaTrim Outside Corner Caps 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!

Customer Reviews
3.8 Based on 5 Reviews
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Stev S.
United States United States

Works Great!

The product is easy to use and looks great! I will be buying more. Highly recommend buying this product, it really makes the trim look complete.

Pattie H.
United States United States

Great product, easy to use

I received my product in a timely manner. I remodel houses and when working on an older home that has wall mounted toilets, there were gaps between the toilet and the wall. This is where insta trim came in to make the project look finished. The homeowner and I both loved the finished look. It's been several months since installation and so far it is still in place and looks great.


InstaTrim Self-Adhesive Trim Strips

Pattie; Thank you for your feedback! Let us know if we can ever be of assistance. Regards, Greg

Gene L.
United States United States

Has yet to arrive

I liked the smaller InstaTrim, but was enticed by the corner caps. So, I’ll wait patiently until it arrives.

Joyce W.
United States United States

Didn’t fit

They were too big for my stripping, so they didn’t fit. Appears I have the 1/2 inch InstaTrim. I love the trim it looks clean and straight but the corners are a challenge.


InstaTrim Self-Adhesive Trim Strips

Joyce; Sorry about the corner pieces, maybe we need to make our listing clearer so folks know they will not work on our 1/2" InstaTrim? Hopefully you have resolved your corner issues and are good to go. Regards, Greg InstaTrim Products

Bruce K.
United States United States

Did not stick

I used it for trim on a gap between painted dry wall and a skylight. After a few days the trim fell off. I assume the heat weakened the adhesive. I had to buy super glue. An additional expense.


InstaTrim Self-Adhesive Trim Strips

Bruce; Our apologies for your InstaTrim not sticking to the skylite. These are difficult areas to trim as you know. The heat may have been a factor and or the application surface. In any event, we are happy to issue a refund. Regards, Greg Amundson President InstaTrim Products