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APPENDIX C — 42CE/42DC RETURN MODIFICATION (cont)
2. Remove duct collar assembly.
3. Remove access panel.
4. Install access panel on the rear of the unit.
5. Install duct collar assembly.
6. Slide the filter in the duct collar opening and install filter
bracket.
Conversion is complete.
NOTE: To convert a Bottom Return unit to Rear Return, follow
the same process in reverse.
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