Abstract: A door of glass fiber-reinforced plastic having two door panels and four sealing strips. Each of door panels has a pair of projecting stripes at the top and bottom thereof. Each of the four peripheral sides of the door panels are enclosed by sealing strips. Each of the sealing strips has an I-shaped section, and includes an attachment portion. Two insertion grooves are formed between the sealing strip and the attachment portion to permit the insertion of both door panels with their projecting stripes thereinto. A plurality of stiffening ribs is interposed between both door panels. Accordingly, drawbacks of the prior art can be eliminated by the door of the invention that is completely formed in a rectangular shape. The door panels are made of fiber-reinforced plastic to create a visual effect of simulation of wood grains. The sealing rims of the prior art are no more existing in the invention so that the whole appearance won't be affected.