1)
When did he make the Mizbe'ach?
1.
Malbim: R. Yosi (Zevachim 59a) holds that he made it only at the time of Chinuch [ha'Bayis], when Moshe's copper Mizbe'ach was too small. Our verse implies like R. Yehudah there, that Shlomo already made his Mizbe'ach, and at the time of Chinuch he was Mekadesh the Chatzer [to offer Korbanos on it].
2)
Was the Mizbe'ach of copper?
1.
Malbim: No. It was of stone, in place of Moshe's copper Mizbe'ach.
3)
Was the entire Mizbe'ach 20 by 20?
