Exterior Dimensions Duct Dimensions * Approximate
Model
ABCD E FG K L Q P
Weight (lbs)
ERV-251 46 34 27 16 8 10 16 6
3
/4
7 10 16 250
ERV-361 62 51 34 15 15 18 18 8
3
/8 11
1
/2 19 18 750
ERV-521 67 67 44 18 15 24 24 10
3
/4 13
1
/2 26 26 1200
ERV-581 75 70 67 16 22 22 27 16 18
3
/4 28 48 1450
MODELS ERV-251, ERV-361, ERV-521 AND ERV-581