This adapter fits a 14" x 14" opening. Please check your fan requirements. If it is 400mm x 400mm you need to purchase an adapter from our Euro Adapter listing.
Patent Pending adapter matches the contour of the OEM roof so a standard RV style vent mounts to a flat surface. Prevents distorting the roof sheet metal or vent flange and can be used as an aid for locating the fan. They are CNC machined out of UV and fire resistant expanded PVC. The fan mounts to the outside adapter.
It is important to use our Interior Support Framing system.
Please note that not all of the Transit vans are the same in the Most Forward area and may require more adhesive if there is a gap or some sanding on the adapter.
The outside adapter will fit anywhere along the cargo part of the roof. Longer screws than came with the vent fan may be needed.
Check out the NEW Airplus vent fan we offer. It has more features than the Maxxair, a brushless motor and it does not rattle! By far the best!! The fan adapters also work with the Maxxair Deluxe series and the Fan-tastic Vent fans.
The vent adapter outside dimension is 16 3/4 X 16 3/4. If you are using a Maxxair vent fan our adapter fits the Maxxfan Deluxe series, other Maxxair vent fans have a wider flange. You will need a wider adapter. Please text Kim at 541-490-4292 for help.
The option with butyl tape includes 64" of tape. If the butyl tape is stuck to the plastic, put it in the freezer for 30 minutes. It will release, then let the butyl tape return to room temperature.
The level shown in the photo is not included.
We make adapters to fit air conditioners and adapters for offset locations. Please contact us so we can verify size and location.
Roof Vent Adapter Install Tips
We recommend Sikaflex 221. Locate and cut the 14 x 14 hole. You can use the adapter as a guide to mark the hole. Stay clear of roof support beams.
Make a tape line 1/4" beyond the adapter perimeter.
De-gloss the area with a Scotch-brite pad. No need to scuff, just dull the paint. Clean with isopropyl alcohol and let dry thoroughly. Blow dryer if it's wet and/or cold out.
Apply three 1/8" beads of the Sikaflex on the face of the adapter. Then, press the adapter down onto the roof until the adhesive oozes out the sides. It's not necessary to clamp. If you do, use several lightly set clamps and spread out the clamp force over the whole surface area.
Using the adhesive that oozes out, make a fillet around the adapter with a double gloved finger. Pull the tape within 15 minutes. Cure is fast on outside. Let cure overnight and then proceed with the fan install.
If you purchased our Interior Framing Strips, using the hole that you cut locate where the transverse strips need to be placed on the longitudinal strips. Assemble the interior frame with the 2" screws provided. Once the frame is assembled it will be glued to the interior side of the roof using Sikaflex 221. If the strips ordered are not bay specific, then you may need to cut them to the length of the panel you are installing it in.
We recommend using butyl tape for the fan install. Cover the fan flange with 1" wide tape. Place the flange onto the adapter and press down. Then drill pilot holes through the adapter and into the van roof. You may need the 4 longer screws provided for the corners. Tighten all screws very lightly against the fan flange. Some butyl will ooze out which you can trim off.
Coat the fan flange, adapter and onto the roof about 1/2" with self-leveling Dicor or brush-on Flexseal. Some sealants will melt the fan plastic so you might try it on a portion of the interior bezel first. You will cut a lot of that piece off.
Good idea to check the integrity and reapply the sealant every so often.
**Please note, if you purchased butyl tape with this order and the butyl tape is stuck to the plastic, place it in the freezer for 15 or 20 min. It will release, then let it return to room temperature.
Disclaimer: Van owner and/or installer assumes all risk associated with roof top mounted items and/or components. Van owner and/or installer recognizes and agrees that this product, and each of its component parts, is sold “as is” and that seller makes no representation or warranty of merchantability that the product is fit for any particular purpose.
"Most Forward" or "MF" is further forward than the raised circle
Color of the adapter may be different that what is shown in the photo.
Disclaimer:
Van owner and/or installer assumes all risk associated with roof top mounted items and/or components. Van owner and/or installer recognizes and agrees that this product, and each of its component parts, is sold "as is" and that seller makes no representation or warranty of merchantability that the product is fit for any particular purpose.
The vent adapter outside dimension is 16 3/4 X 16 3/4. If you are using a Maxxair vent our adapter fits the deluxe series, other Maxxair fan vents have a wider flange. You will need a wider adapter. Please call.
We highly recommend our interior framing support system.
We can make adapters for offset locations. Please contact us so we can verify size and location.
Roof Vent Adapter Install Tips
We recommend Sikaflex 221. Locate and cut the 14 x 14 hole. You can use the adapter as a guide to mark the hole. Stay clear of roof support beams.
Make a tape line 1/4" beyond the adapter perimeter.
De-gloss the area with a Scotch-brite pad. No need to scuff, just dull the paint. Clean with isopropyl alcohol and let dry thoroughly. Blow dryer if it's wet and/or cold out.
Apply three 1/8" beads of the Sikaflex on the face of the adapter. Then, press the adapter down onto the roof until the adhesive oozes out the sides. It's not necessary to clamp. If you do, use several lightly set clamps and spread out the clamp force over the whole surface area.
Using the adhesive that oozes out, make a fillet around the adapter with a double gloved finger. Pull the tape within 15 minutes. Cure is fast on outside. Let cure overnight and then proceed with the fan install.
If you purchased our Interior Framing Strips, using the hole that you cut locate where the transverse strips need to be placed on the longitudinal strips. Assemble the interior frame with the 2" screws provided. Once the frame is assembled it will be glued to the interior side of the roof using Sikaflex 221. If the strips ordered are not bay specific, then you may need to cut them to the length of the panel you are installing it in.
We recommend using butyl tape for the fan install. Cover the fan flange with 1" wide tape. Place the flange onto the adapter and press down. Then drill pilot holes through the adapter and into the van roof. You may need the 4 longer screws provided for the corners. Tighten all screws very lightly against the fan flange. Some butyl will ooze out which you can trim off.
Coat the fan flange, adapter and onto the roof about 1/2" with self-leveling Dicor or brush-on Flexseal. Some sealants will melt the fan plastic so you might try it on a portion of the interior bezel first. You will cut a lot of that piece off.
Good idea to check the integrity and reapply the sealant every so often.
**Please note, if you purchased butyl tape with this order and the butyl tape is stuck to the plastic, place it in the freezer for 15 or 20 min. It will release, then let it return to room temperature.
DISCLAIMER
Van owner and/or installer assumes all risk associated with roof top mounted items and/or components. Van owner and/or installer recognizes and agrees that this product, and each of its component parts, is sold "as is" and that seller makes no representation or warranty of merchantability that the product is fit for any particular purpose.
You want a build that will last as long as your van. We did too. That's why we stand behind every product we sell.
We’ve built three camper vans for our family. A 2010 Mercedes Sprinter, 2016 Ford Transit 130MR and a 2016 Dodge ProMaster 136HR.
We love sharing our experiences. Please ask us about any phase of your van project from suspension to solar panels.
Products & Tools
Wondering which dehumidifier, subwoofer, glue, coffee maker or even scissors is best for your build? Hein has done the research and testing so you don't have to guess.
Quality, durability and safety. Learn more about why you should choose
Thinsulate for your van build here.
Add our Thinsulate Installation kit: scissors, 4ft flexible rod and high strength string. We will ship it inside your roll of Thinsulate.
Recommend using 3M 90 Adhesive Spray to apply the white fiber side to the Van skin.
Approximate amounts needed to insulate the walls, ceiling, doors and cab area:
144 WB Sprinter,148 WB Ford Transit with slider window & window in back doors = 50 linear feet
Promaster 159 WB = 60 linear feet
170 WB Sprinter = 60 linear feet
170 WB Extended Sprinter or Transit 148 Extended = 70 linear feet
Any order over 45 linear feet will ship in two rolls.
Please call if you are in Alaska or Hawaii for shipping 541-49O-4292
The vent adapter outside dimension is 16 3/4 X 16 3/4. If you are using a Maxxair vent our adapter fits the deluxe series, other Maxxair fan vents have a wider flange. You will need a wider adapter. Please call.
We highly recommend our interior framing support system.
We can make adapters for offset locations. Please contact us so we can verify size and location.
Roof Vent Adapter Install Tips
We recommend Sikaflex 221. Locate and cut the 14 x 14 hole. You can use the adapter as a guide to mark the hole. Stay clear of roof support beams.
Make a tape line 1/4" beyond the adapter perimeter.
De-gloss the area with a Scotch-brite pad. No need to scuff, just dull the paint. Clean with isopropyl alcohol and let dry thoroughly. Blow dryer if it's wet and/or cold out.
Apply three 1/8" beads of the Sikaflex on the face of the adapter. Then, press the adapter down onto the roof until the adhesive oozes out the sides. It's not necessary to clamp. If you do, use several lightly set clamps and spread out the clamp force over the whole surface area.
Using the adhesive that oozes out, make a fillet around the adapter with a double gloved finger. Pull the tape within 15 minutes. Cure is fast on outside. Let cure overnight and then proceed with the fan install.
If you purchased our Interior Framing Strips, using the hole that you cut locate where the transverse strips need to be placed on the longitudinal strips. Assemble the interior frame with the 2" screws provided. Once the frame is assembled it will be glued to the interior side of the roof using Sikaflex 221. If the strips ordered are not bay specific, then you may need to cut them to the length of the panel you are installing it in.
We recommend using butyl tape for the fan install. Cover the fan flange with 1" wide tape. Place the flange onto the adapter and press down. Then drill pilot holes through the adapter and into the van roof. You may need the 4 longer screws provided for the corners. Tighten all screws very lightly against the fan flange. Some butyl will ooze out which you can trim off.
Coat the fan flange, adapter and onto the roof about 1/2" with self-leveling Dicor or brush-on Flexseal. Some sealants will melt the fan plastic so you might try it on a portion of the interior bezel first. You will cut a lot of that piece off.
Good idea to check the integrity and reapply the sealant every so often.
**Please note, if you purchased butyl tape with this order and the butyl tape is stuck to the plastic, place it in the freezer for 15 or 20 min. It will release, then let it return to room temperature.
DISCLAIMER
Van owner and/or installer assumes all risk associated with roof top mounted items and/or components. Van owner and/or installer recognizes and agrees that this product, and each of its component parts, is sold "as is" and that seller makes no representation or warranty of merchantability that the product is fit for any particular purpose.
Click the icons below to check in on some of our favorite van builders. See which DIYvan products they have used and why they chose them!
Hein and Kim have been such a great resource as we build out our van! Love their products and ideas for ways to save space in our layout. Thank you for answering so many of our questions and for encouraging us to press on even when the electrical is confusing. I highly recommend working with them.
Hein and Kim have been such a great resource as we build out our van! Love their products and ideas for ways to save space in our layout. Thank you for answering so many of our questions and for encouraging us to press on even when the electrical is confusing. I highly recommend working with them.
Hein and Kim have been such a great resource as we build out our van! Love their products and ideas for ways to save space in our layout. Thank you for answering so many of our questions and for encouraging us to press on even when the electrical is confusing. I highly recommend working with them.
Hein & Kim's most recent build is a 2017 Dodge ProMaster they bought specifically for DIYvan product R&D. Learn more about this build on Hein's forum on ProMaster Forum.
Check it Out
Hein & Kim's second build was a 2016 Ford Transit they began converting in 2016. Follow their journey from choosing their van to completion on Hein's forum on Ford Transit USA Forum.
See the build
In 2012, Hein & Kim converted their first van- a 2010 Mercedes Sprinter van. They wanted to convert the Sprinter van into a fully equipped RV while discovering and developing products to offer to fellow DIY van upfitters. Read all about their first van conversion on Hein's forum on The Sprinter Source Sprinter Forum.
Learn moreCustom Roof Rack Inquiries
Custom Adapter Inquiries
Custom Product Inquiries
It is our pleasure to share our engineering and fabrication knowledge and experience to help you complete your build and enjoy your van in comfort, safety and efficient style. Please contact us with questions about any phase of your van project from suspension to solar panels
and everything in between.
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