what is the diameter of the entry hole?
792947
Just under an inch and a half. I suspect that's well under what most songbirds prefer, which might be part of why mine has gotten no attention whatsoever.
792948
It's maybe 2"? Large enough for a sparrow not large enough for a big robin.
1879199
I cannot tell you the diameter but there is a seal for it. Perhaps the Amazon people know the diameter of the hole itself. Good Luck!
1801866
Here is a link to the install instructions. Looks like 2 5/8" Diameter hole http://assets.bluesea.com/files/resources/instructions/6007_web_version.pdf
66104
The hole is 1/2 " in diameter. It sits 31/2" below the top to 4"". It is 2 3/4" from the widest point of the knocker although it is not directly across from the widest part
544103
All of the hardware I've purchased so far are 6mm in diameter. The hole size required is 1/4 inch.
1409380
I roughly measured it with a ruler. The opening is about 3" in diameter and 1" deep.
375526
1/2" to 5/8". Worked well on my door openings. I no longer have water blowing in under my doors. Hope this helps.
34257
A standard 4" hole. Due to the construction I'm fire it would a 3.75". It's pretty tight. I cut out some of the rubber that holds it in place with a knife. You could trim it more to fit a smaller hole. I'm pretty sure it would fit snuggly in a larger hole.
351534
The outer diameter is 9 1/4 inches. I only cut the screen the size of the door, gave it more stability in the screen. The door is approximately 5 3/4 by 6 1/4. Worked great until a large animal tried to get in, and it broke.
776630
Hole is standard size (about 2" diameter). The Kraus PT-50-PU-10CH P-Trap and Pop Up Drain looks good and fits well in this opening.
2113718
I think it is about 1/2" to maybe 3/4". It a spring kind of thing. I might be possible to "wind" it through the hole.
1011281
Don't know the exact diameter but they fit the hole to lock a trailer hitch. I have two that I use to lock a flatbed utility trailer and a 14' box trailer
1077194
It is around 4 inches. My cats (11 years old) do not have any problems entering it.
1303927
I'm sorry for the delay, I've been out of town and unable to measure the center hole. The hole is 1" approx
710850
I am not sure of the actual size but it fit the existing opening perfectly in my camper.
7002
The largest hole seems to be 0.4 inch wide (1.1cm) - I would say in the middle between 0.4 and 0.5. I hope it helps.
186969
I'm sorry, I don't know for sure and can't measure it now because it is installed in a tenant's apartment. I think that a diameter of between 8" and 10" would be a good guess. Definitely less than 12" diameter.