In 1999, I had all the windows in my house replaced by Brock. The original job they did was excellent, and I was very pleased.
The windows and crank mechanisms came with a lifetime warranty. I didn't think much about the warranty at the time.
So, time marches on, and SIXTEEN YEARS LATER, the cranks on two of my windows failed. I called up Brock, expecting to be given some run-around. To my great surprise, the young lady who answered the phone simply asked me for my phone number, looked up my original purchase in a matter of seconds, and said "No problem - we'll order the replacement parts at no charge to you". And she promised to call me back when they arrived.
Well, a few days later, I got a call from the same young lady, telling me my parts had arrived. I picked them up and was able to install them in less than 10 minutes!!
Brock, thanks for a great product and great customer service. When my windows need replacing in another 20 years or so, I will be sure to call you.