Mounting Hole Spacing For The Dometic RV Furnace Access Door # DMC57RR

Question

Question:

What are the mounting hole spots for the DMC57RR?

asked by: John

0

Expert Reply:

Hey John,

I drew up a little diagram showing the spacing for the mounting holes in the Dometic RV Furnace Access Door # DMC57RR flange and access door. For mounting the flange to the RV walls you'll go with the holes spaced further out at 17-1/8" x 6-5/8". I would definitely use some butyl tape # AL28FJ on the back side of the flange to help prevent any water from leaking in through the screw holes.

Once you have the furnace in place and the access door mounted you can also run a bead of non-sag sealant # 344270341437-1 around the outer edge of the door to really ensure a waterproof seal.

expert reply by: Kevin C

0

DMC57RR Mounting Hole Spacing
(click to enlarge)

Jerred H.

1/5/2026

Hey John, how did the mounting go with the Dometic furnace access door and the flange spacing you used? It’d be great to hear if the butyl tape and sealant gave you a good waterproof seal. Your update could make it easier for the next person working on the same setup.

Reply

Answer 1

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

view full answer...

Answer 2

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

view full answer...

Answer 3

Thanks for the picture! I checked with Progressive Dynamics the replacement power converter you need for your Parallax Series 7300 Model 7345 is the Replacement Converter for Parallax/Magnetek or WFCO RV Power Centers - 45 Amp item #PD4645V.

view full answer...

Answer 4

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

view full answer...

Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

view full answer...

Answer 6

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

view full answer...

Answer 7

Hey Micah! Pacbrake has actually been around for a long time, more than 60 years. We have had customers ask for these air bags in the past, and we've seen them on vehicles coming in. Until now, Firestone has been the go to since their quality is…

view full answer...

Answer 8

Hey Nelson, so you would need two separate systems since a supplemental braking system can only be used with a towed vehicle and a trailer brake controller can only control trailer brakes. Main difference is a supplemental braking system is designed…

view full answer...

Answer 9

Hey Robert, yes the Kodiak disc brake calipers part #KDBC225DAC that you referenced will replace the Tie Down calipers you have now 46304, they can be used as a left or right hand caliper and does come with ceramic brake pads. If you ever needed…

view full answer...

Answer 10

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

view full answer...

Answer 11

Both the Roadmaster and Blue Ox tow bars are great options. But if it was my decision to make I would go with the Blue Ox Avail part #BX7420 as we have found that the Blue Ox tow bars are a little easier to connect and disconnect from. Also this tow…

view full answer...

Answer 12

Hey Kathryn, what specifically on the Blue Ox Alpha are you needing to replace? Unlike Roadmaster they don't have as many replacement parts but you can contact them about getting yours rebuilt but that's just not something we can help with.…

view full answer...

Mounting Hole Spacing For The Dometic RV Furnace Access Door # DMC57RR

Products Featured in This Question

Product Page this Question was Asked From

Continue Researching