PROBLEM TO BE SOLVED: To provide a door device which is excellent in economy and the workability in which a door frame can be joined to a roller side of an upper rail even by one worker.SOLUTION: In a door device in which a door frame is formed by a pair of upper and lower horizontal chambranles (1) and a pair of left and right vertical chambranles, the upper side chambranle is connected to a double wheel type rollers (R1), (R2) slidably inserted in an upper rail (5) via a connecting member (A), and the lower side chambranle is slidably inserted into a lower side rail, the upper side chambranle has a dovetail groove (15 A) for fixing a sheet or an insect net, and a long groove (11) having a narrow opening width, as well as a shaft part (7) provided with the connecting member between the rollers； a support rod (8) rotatably inserted in a hole formed in the shaft part； a support metal fitting (10) having a lower hook piece； a guide piece (12) slidably inserted in the long groove； and an attachment member detachably connecting the guide piece to the support metal fitting are comprised.SELECTED DRAWING: Figure 2【課題】作業者が一人でも上側レールのローラ側にドア枠を連結できる作業性、経済性に優れたドア装置を提供する。【解決手段】上下一対の横框（１）と、左右一対の縦框とでドア枠を形成し、上記上側横框を上側レール（５）内にスライド自在に挿入したダブル車輪型ローラ（Ｒ１）、（Ｒ２）に連結部材（Ａ）を介して連結し、上記下側横框を下側レール内にスライド自在に挿入しているドア装置において、上側横框はシート又は防虫ネット定着用の蟻溝（１５Ａ）と、開口部幅狭の長溝（１１）とを有し、上記連結部材を上記ローラ間に設けた軸部（７）と、上記軸部に形成した孔に回転自在に挿入した支持ロッド（８）と、下部引っ掛け片を備えた支持金具（１０）と、上記長溝内にスライド自在に挿入したガイド片（１２）と、上記ガイド片を上記支持金具に着脱自在に連結する取付部材と、で構成する。【選択図】図２
