Distance Between Holes On B&B Square Corner Cap
Updated 09/02/2026 | Published 08/26/2026
Question:
Good afternoon! I’m looking for replacement slideout corner covers. Right now I’m checking out Part Number: BM78ZR on your website and hope this is the unit I need. I see these through other vendors and there’s obviously variations but none of these vendors want to communicate with their customers to answer questions. I’m hoping to have better luck here. My covers measure 4 13/16” which seems close enough to this item. How about the spacing for the mounting holes? I have covers with holes 3 5/8” on center. Many I see online are significantly closer together if illustrated in specs, unknown when they aren’t if I can’t get an answer. Do you stock anything that my meet my needs please? Thank you for your time! Tim
asked by: Tim W
Expert Reply:
Hey Tim! Sorry for the delay, we're a bit behind. The holes on the B&B Square Corner Cap for RV Slide-Out # BM78ZR are 3-1/2" apart. Since it isn't some kind of weight bearing or structural part, I'm sure you can make it work with what you have.
What kind of trailer are you working on?
(click to enlarge)
Product Page this Question was Asked From
B&B Square Corner Cap for RV Slide-Out - 4-3/4" - Polar White
- RV Slide Out Parts
- Caps and Covers
- Square Corner
- Bolt-On
- White
- B and B Molders
more information >
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Tim W.
9/1/2026
Appreciate your reply, Robin! I was beginning to think I was being completely shut out by every vendor I reached out to. I have a 2001 Dutchman Fifth Avenue 28RK fifth wheel. Do you think the BM78ZR is the closest cover to matching mine you have access to?