Fit Perfectly. Magnetic bottom works great. It is more expensive than the opaque option that is cheaper, but made just as well and fits just as well. I bought one of each. I used the opaque option is for the outside door.

I ordered an alternate brand that was cheaper. It was translucent so the doggies couldn't see through it. I returned that and ordered another cheaper brand. It was 1/2" too short so wouldn't stay closed, which let in the hot air and bugs from outside. I finally ordered the Ideal brand (appropriately named) and it fits perfectly! It's the Goldilocks choice.

Anytime we have a new dog they like chewing on the dog flap in the puppy stage. This was a perfect replacement for the dog door flap.

I've had my Ruff Weather (RW) dual flap dog door for 11 years. The door frame itself has performed superbly from an 85lb and a 110lb dog both blasting through it many times a day over the decade plus. However, the weak point of these doors -as you well know if you have one - is that after only a few weeks the flap begins to sag, resulting in a gap that renders your door not so "Ruff Weather."

Over the years I tried a few things to fix a sagging flap, and all failed, so I have had to invest hundreds of dollars in new flaps over this time. Recently I bought a brand new RW door (I put the old one on my shed studio), and I noticed that the Ideal Pet people have tried to address the gap caused by the flap sag by making the brush felt on the sides longer now, so that the felt overlaps the flap instead of just meeting it - too bad they couldn't have addressed the cause instead of the symptom!

Anyway, this time I really applied myself to finding a solution, and I came up with an inexpensive one that works: FlexFix UL Listed Duct Tape Sealer (1.89 in. x 120.3 yd).

1. Starting with the long sides, lay out a piece the tape long enough to go all the way from top to bottom of the flap. Lay the flap on the tape so the flap edge is on the center of the tape, then bring the tape up over to the top side of the flap, sandwiching the flap between the piece of tape. It's important that the tape goes all the way top to bottom because this is what keeps it from sagging.

2. Repeat step one with the top of the flap

3. Slit the tape a bit where the flap holes are so the pegs can go through

I did this then waited a year to post this, just to make sure the flap didn't sag. It didn't! The tape even improved the sag on the old flap a bit.

Photo 1 is the gap that never fails to appear on each flap after a few weeks.
Photo 2 is a brand new flap with flexfix duct tape on all four sides
Photo 3 is the taped flap installed (view from inside with inside flap removed)
Photo 4 is the taped flap after one year (that green on the bottom of the door itself is painter's tape. This area is hard to clean, so I put the tape on there and when it gets dirty I just peel it up and put new down)

As a bonus for you DIYers, I've included photos of the type of dog door that the Amish around here use. If you are a good trainer, this looks to me like the best fix for high wind areas. Those are self-closing hinges so the door takes a slight bit of effort to open, then snaps closed, so maybe not good for smaller dogs. My dogs were old when I got this shed with the door, one of my dog's is sensitive and they both dislike change, so I opted to replace this door with my old RW door from the house (mentioned earlier).

6/17: the photos were out of order and (hopefully) fixed.

This is a good product. Depending upon how much use (and abuse) it gets from your dog(s), it can almost last a year. Eventually, they need to be replaced because they begin to rip and tear at the fasteners - which leads to my next comment. This is a good product, but every year they go up in price; this year they have gone up $5 since my last purchase (I have 6 dogs, so I have to replace a flap just about every 6-7 months). At this rate, I will start purchasing from a different company if their prices continue to escalate.