31920 door hollow products are offered for sale by suppliers on Alibaba.com, of which other doors accounts for 13%, slab doors accounts for 2%, and sliding doors accounts for 1%.
A wide variety of door hollow options are available to you, such as steel, glass and polymer.You can also choose from outdoor, apartment and entry door hollow,as well as from free spare parts, onsite installation, and onsite training door hollow, and whether door hollow is modern, chinese, or industrial.