2
NOTE:
The rigid back bar notch can be positioned toward the posterior of the wheelchair
as shown. The rigid back bar notch can also be in the anterior position, although seat depth
will be affected.
NOTE:
Avoid over-tightening the screws around the wheelchair push canes (See Figure 2B)
B. Adjusting the Back Width
A unique feature of the Back is its range of width adjustability. It is designed first to custom
fit the user, and second, to fit onto the wheelchair. This is accomplished by having two sets
of width adjustments.
When the proper width of the Back has been adjusted to the specific user, a second set of
adjustments within the attachment hardware allows the Back to properly fit the wheelchair.
The Back is offered in two standard sizes:
Model Number
Description
B1
476D10=RA15-17
Standard model - accommodates w/c back widths between
15˝ (38 cm) and 17˝ (43 cm); is factory preset at 16˝ (41 cm)
476D10=RA18-20
Large model - accommodates w/c back widths between 18˝
(46 cm) and 20˝ (51 cm); is factory preset at 18˝ (46 cm)
B2
476D20=AR15-17
Standard model - accommodates w/c back widths between
15˝ (38 cm) and 17˝ (43 cm); is factory preset at 16˝ (41 cm)
476D20=AR18-20
Large model - accommodates w/c back widths between 18˝
(46 cm) and 20˝ (51 cm); is factory preset at 18˝ (46 cm)
B3
476D30=ARD15-17
Standard model - accommodates w/c back width between
15˝ (38 cm) and 17˝ (43 cm); is factory preset at 16˝ (41 cm)
476D30=ARD18-20
Large model - accommodates w/c back widths between 18˝
(46 cm) and 20˝ (51 cm); is factory preset at 18˝ (46 cm)
476D30=ARTD15-17 Standard model - accommodates w/c back widths between
15˝ (38 cm) and 17˝ (43 cm); is factory preset at 16˝ (41 cm);
includes tear drop laterals
476D30=ARTD18-20 Large model - accommodates w/c back widths between 18˝
(46 cm) and 20˝ (51 cm); is factory preset at 18˝ (46 cm);
includes tear drop laterals
B4
476D40=AR4D15-17 Standard model - accommodates w/c back widths between
15˝ (38 cm) and 17˝ (43 cm); is factory preset at 16˝ (41 cm)
476D40=AR4D18-20 Large model - accommodates w/c back widths between 18˝
(46 cm) and 20˝ (51 cm); is factory preset at 18˝ (46 cm)
476D40=AR4TD15-17 Standard model - accommodates w/c back widths between
15˝ (38 cm) and 17˝ (43 cm); is factory preset at 16˝ (41 cm);
includes tear drop laterals
476D40=AR4TD18-20 Large model - accommodates w/c back widths between 18˝
(46 cm) and 20˝ (51 cm); is factory preset at 18˝ (46 cm);
includes tear drop laterals
Otto Bock Breathable Back
476D11=RB15-17
Standard Model - accommodates wheelchairs ranging from
15˝ (38 cm) to 17˝ (43 cm) wide.
476D11=RB18-20
Standard Model - accommodates wheelchairs ranging from
18˝ (46 cm) to 20˝ (51 cm) wide.
Table 1. Model Numbers
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