Condition - Very Good The item shows wear from consistent use, but it remains in good condition and functions properly. Item may arrive with damaged packaging or be repackaged. It may be marked, have identifying markings on it, or have minor cosmetic damage. It may also be missing some parts/accessories or bundled items.
MJ8AE, an abridged version of the Eighth Edition of Manual J, provides complete instructions for estimating heat loss and heat gain for residential structures. MJ8AE is sufficient for learning the Manual J procedures and for undertaking hand calculations on a varied number of home applications.