How to tell if your RF seat is outgrown

[Jewels]

How to tell if your RF seat is outgrown by height:

It seems that how to tell when a RF (rear-facing) seat is outgrown is a fairly common question. It can be really hard to tell when a RF seat is outgrown, and a common misconception is looking from the front of the carseat to see if it is outgrown. The seat will pretty much always look outgrown from the front before it is truly outgrown because you need to look from the side.

This picture shows the correct way to measure. A line is drawn perpendicular to the shell/back of the carseat over the top of the child's head (#1). Then a second line is drawn out from the top of the shell parallel to the first line (#2).

Now measure the distance between the two lines. When there is *less than one inch*, the rearfacing restraint is outgrown by height.

http://i116.photobucket.com/albums/o34/jewelleegeake/carseat/image.jpg



This picture shows a common misconception with how people measure to check for the one inch rule. The line is drawn parallel to the ground from the top of the shell. You can see how this would appear to show the seat is outgrown, however it is incorrect to measure this way and this child still has room to grow in this seat.

http://i116.photobucket.com/albums/o34/jewelleegeake/carseat/image-1.jpg


The best place to measure how much room is left in the seat is when the seat is installed in the vehicle. They're usually more upright in the house and the more upright they are the more shell there will be above the child's head making your measurements not acurate.

*Disclaimer* This 1" rule works for all infant seats. Some convertibles allow you to have the head even with the top of the shell, refer to your manual.


**The pictures used in this article are used with permission by An Aurora.

[CDNTech]

Great article! :thumbsup:

[Mama!]

Very cool.

Our scenera doesnt say anything about head height, so I was wondering.

[Brilliantmama]

what about seats with an adjustable headrest, like the BLVD?

[Patriot201]

Jewels,

What a GREAT post this is! This will be SO helpful to MANY people!

I wish I could give you rep MANY times for this one! :)

[brightredmtn]

*Disclaimer* This 1" rule works for all infant seats. Some convertibles allow you to have the head even with the top of the shell, refer to your manual.

My manual actually says nothing about height limits for RF.

[Jewels]

My manual actually says nothing about height limits for RF.

I know the Britax MA allows the head to be even with the top of the shell. If you can't find it in the manual then I would call the company that makes your carseat and ask them.

[An Aurora]

I know the Britax MA allows the head to be even with the top of the shell. If you can't find it in the manual then I would call the company that makes your carseat and ask them.

Just to clarify, the new 2008 Britax manuals now state that the child must have an inch of shell above the top of the head to RF in their convertibles. As far as I know, this is retroactive.

[Pepse]

very cool, thanks for sharing. I will have to measure dd when she wakes up from her nap

[rosey2007]

Thank you for making that clear.

[NannyMom]

Maybe this is a silly question... but.... If DD's head is sitting against the back of the carseat, and I take a ruler and put it against the seat, and measure from the top of her head to the top of the seat.... that'll give the same measurement as in the first picture, right?

[Pixels]

Maybe this is a silly question... but.... If DD's head is sitting against the back of the carseat, and I take a ruler and put it against the seat, and measure from the top of her head to the top of the seat.... that'll give the same measurement as in the first picture, right?
As long as it's a ruler (not a cloth tape measure), and you make sure that you are measuring perpindicular to the shell. You want to avoid a tape measure because many shells round over at the edge, which would give a much higher measurement than what the child actually has.

[tjham]

How to tell if your RF seat is outgrown by height:

It seems that how to tell when a RF (rear-facing) seat is outgrown is a fairly common question. It can be really hard to tell when a RF seat is outgrown, and a common misconception is looking from the front of the carseat to see if it is outgrown. The seat will pretty much always look outgrown from the front before it is truly outgrown because you need to look from the side.

This picture shows the correct way to measure. A line is drawn perpendicular to the shell/back of the carseat over the top of the child's head (#1). Then a second line is drawn out from the top of the shell parallel to the first line (#2).

Now measure the distance between the two lines. When there is *less than one inch*, the rearfacing restraint is outgrown by height.

http://images.pnimedia.com/GetImage.aspx/1Yr8_wjP_Gwp559rP13yQle9x,7nyX4b7MKmTWW_kg4rdM0d7L Eiz_R9TX8,xkeGdWkyOrt9mhbw-/image.jpg



This picture shows a common misconception with how people measure to check for the one inch rule. The line is drawn parallel to the ground from the top of the shell. You can see how this would appear to show the seat is outgrown, however it is incorrect to measure this way and this child still has room to grow in this seat.

http://images.pnimedia.com/GetImage.aspx/1l2DAZ4STEydIoAkWB,RdmE,tkvw2kudrUnOLSHisX4YW,zWWS 9zDiABsqvM,fx9KUpWOn3E9ZUM-/image.jpg

The best place to measure how much room is left in the seat is when the seat is installed in the vehicle. They're usually more upright in the house and the more upright they are the more shell there will be above the child's head making your measurements not acurate.

*Disclaimer* This 1" rule works for all infant seats. Some convertibles allow you to have the head even with the top of the shell, refer to your manual.


**The pictures used in this article are used with permission by An Aurora.

Are there pictures like this is show when a seat is outgrown FF? (lines drawn to show top of ears in relation to top of shell?)

[Jennifer mom to my 7]

Britax has them in there new manuals (minus the adorable model of course).

Page 6-7 of the new marathon manual, right in the initial warning sections.
http://www.britaxusa.com/uploads/products/user-guides/10.pdf

[mommycat]

Britax has them in there new manuals (minus the adorable model of course).

Page 6-7 of the new marathon manual, right in the initial warning sections.
http://www.britaxusa.com/uploads/products/user-guides/10.pdf

Wow, really - on the reclined shoulder level?? I didn't imagine it like that at all. But then again, the recline they are showing is pretty exaggerated, isn't it? So when you look at a kid in their seat you just look straight on and the little bit of recline doesn't "show up" when you are looking like it does in the picture.

[Jennifer mom to my 7]

Wow, really - on the reclined shoulder level?? I didn't imagine it like that at all. But then again, the recline they are showing is pretty exaggerated, isn't it? So when you look at a kid in their seat you just look straight on and the little bit of recline doesn't "show up" when you are looking like it does in the picture.

Right, pretty much I think their reclined level is if the seat is installed in recline level, which you cannot do over 33-35 pounds (not sure if the new manuals make a difference, the older 33 pound rf seats had a 33 pound recline limit when ff). As we know, if you can get a more upright install with a ff britax, the child gets more room:)

[sparkyd]

what about seats with an adjustable headrest, like the BLVD?

There was no answer posted to this question and I think it's a good one - I was wondering the same thing the other day.

[Jeanum]

Britax indicates there must be 1 inch of shell above the top of the rear facing child's head for determining if the Blvd. has been outgrown by height rear facing. There was a discussion of this in the online CEU chat held here with a rep. from Britax last year, and the Britax chat transcript is also posted here at or near the top of the Articles forum. :)

[mommycat]

So, 1" of shell and not headrest, yes?

[Jeanum]

Yes, shell. :)

[erin327]

I found the post above (great thread!) when trying to be sure I was measuring head height correctly. I was using the right idea, but still have a question. Where do I draw the imaginary line at the top of the seat? At the top of the cover as it is when she is in it? Or press down the top of the cover and measure only to the top of the hard part of the shell? Thanks!

[Jeanum]

You would need to measure using the top of the hard plastic shell, and not the top of the padded cover.

[erin327]

You would need to measure using the top of the hard plastic shell, and not the top of the padded cover.

Thanks! Sorry to ask something that had just been asked. When I read the top post about measuring, the rest of the thread was not showing. It just said single post or something like that and only had the original. Now I can see the whole thread and realize how silly that looked to ask the exact same question back to back! Sorry!

[Jeanum]

No problem, glad to help. :)

[racesmom]

Where'd the pics go? I link this thread almost everyday. NEED the pics, pretty please.

[TechnoGranola]

Where'd the pics go? I link this thread almost everyday. NEED the pics, pretty please.EGADS! Yes, we NEED the pics!

[Jeanum]

The pictures are back. :)

[racesmom]

The pictures are back. :)

THANK YOU! :love: I seriously link to this thread almost every day. Parents always want to measure straight on- the wrong way. Thank you, thank you for the pics and info!