Originally Posted by
colorider
Just a few things. 1st, which is not important now is that you can't cut the glass on a sliding glass door. It's tempered and can't be cut. But again, not important now.
The dual flapper doors work great. HOWEVER, I have the petsafe brand and my neighbor has the Hope Depot one. On both, after a year the flaps get warped and distorted and need to be replaced. if not, you don't get a goot seal. They are expensive to replace. Or at least to me they are expensive. I think it was around $60 for the Petsafe ones. Seemed really high for stupid flaps. looking at amazon now and they are about $40 each for the petsafe ones. That's a total ripoff.