Can I ID my Pella Slider rollers without removing the door

A home owner from USA says:
November 11, 2015
I need to replace the rollers on my Pella 5
A home owner from USA says:
November 12, 2015
With the weather changing I really don't want to take the door off twice. (Once to ID the part and once twice to replace them). Is it a relatively safe bet that the 81-249 roller will work? It is a Pella slider about 10 - 12 years old, wood interior and fiberglass or aluminum exterior.
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Paul from SWISCO responded:
November 12, 2015
The 81-249 was used by Pella since the 1960's to the present, but they did come up with the newer 81-244, which has a bottom flange. Seeing as how your door is 10 to 12 years old, you could have the 81-249, but there is no guarantee.
Glass Door Roller Assembly, Fits Pella
Glass Door Roller Assembly, Fits Pella
81-249
$22.15
Sliding Glass Door Roller, Pella
Sliding Glass Door Roller, Pella
81-244
$45.20
Pella Patio Glass Door Roller Assembly
Pella Patio Glass Door Roller Assembly
81-098
$85.34
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