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ACCESSORY DIMENSIONS — 581B036-072
UNIT
SIZE
581B
“A”
ROOF CURB
ACCESSORY
036-072
1
′
-2
″
[356] CRRFCURB001A00
2
′
-0
″
[610] CRRFCURB002A00
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: galvanized steel.
5. Attach ductwork to curb (flanges of duct rest on curb).
6. Service clearance 4 ft on each side.
7. Direction of airflow.
8. Connector packages CRBTMPWR001A00 and 002A00 are for thru-the-curb connec-
tions. Packages CRBTMP003A00 and 004A00 are for thru-the-bottom connections.
UNIT SIZE
581B
BC
D ALT
DRAIN
HOLE
“E”
GAS
“F”
POWER
“G”
CONTROL
CONNECTOR
PKG. ACCY.
036-072
1
′
-9
11
/
16
″
[551]
1
′
-4
″
[406]
1
3
/
4
″
[44.5]
3
/
4
″
[19] NPT
3
/
4
″
[19] NPT
1
/
2
″
[12.7] NPT
CRBTMPWR001A00
1
1
/
4
″
[31.7] CRBTMPWR002A00
1
/
2
″
[12.7] NPT
3
/
4
″
[19] NPT
1
/
2
″
[12.7] NPT
CRBTMPWR003A00
3
/
4
″
[19] NPT
1
1
/
4
″
[31.7] CRBTMPWR004A00