Rheem RGPK Series User's Information Manual page 4

Figure 3. Upflow Filter Location
UPFLOW FILTER SIZES
FURNACE INPUT
WIDTH BTUH (K's)
14 50
17 1 ⁄ 75 & 100
2
21 100
24 1 ⁄ 125 & 150
2
DOWNFLOW FILTER SIZES
FURNACE INPUT
WIDTH BTUH (K)
14 50
17 1 ⁄ 75 & 100
2
21 100
24 1 ⁄ 125 & 150
2
4
SIZE
BOTTOM SIDE
12 1 ⁄ x 25 15 3 ⁄ x 25
4 4
15 3 ⁄ x 25 15 3 ⁄ x 25
4 4
19 1 ⁄ x 25 15 3 ⁄ x 25
4 4
22 3 ⁄ x 25 15 3 ⁄ x 25
4 4
SIZE
14 x 20
12 x 20
12 x 20
14 x 20
Figure 4. Upflow Side Filter Installation
QTY.
1
1
1
1
Figure 5. Downflow Filters Installation
QTY.
1
2
2
2