In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Modern Hydronic Heating 2nd edition (like new) 90.00
Practical Heating Technology 90.00 (new)
Residential Oil Burners (new) 90.00
SMACNA rsidential duct design (like new) 100.00
SMACNA HVAC Duct Construction Standards(like new) 100.00
+ actual shipping cost from ct