How do you decorate your place, what kind of style, colors, and feelings? That will greatly influence the type of door you might want. Also, think of your budget, and whether you want to install it yourself or hire a professional (you don't need to tell us, just keep that in mind). Then look around Houzz, in the products page, they have lots of interior sliding doors and hinged ones, from elegant frosted glass in a dark wood frame, to rustic reclaimed wood planks. You may not want to purchase that exact model, but it might give you a better idea of what would fulfill your airflow needs without sacrificing style.

Do you want the same design both sides? It all depends on the way the door will open as usually a door requires either a flat border or an L shape to close? Do you want the hinges visible or invisible. etc etcThese details are important. I would talk to a carpenter or woodsman first.https://www.houzz.com/magazine/know-your-house-interior-door-parts-and-styles-stsetivw-vs~13812351

I suggest you follow the step-by-step guide for creating storage cabinets under the bathroom sink. Take proper measurements - Measure the available available space in height, width and height. Cut Plywood to size - With a circular saw and framing square, cut all the required pieces out. You can use a sliding compound saw as an alternative. Attach the base and sides - Start assembling the sink cabinets by placing the bottom piece of plywood sheet on a flat surface. Attach the back and top boards - Place the plywood sheet for the top part of the cabinet and attach wood screws to connect it to both the sides. Turn the back faces of the cabinet upwards. Keep the back piece over the structure and fix it into place with wood screws. Attach shelves - Place the cabinet in an upright position to install the shelves. Slide a shelf into the structure so it is flush against the back. Attach door - Keep both hinges of the door on the same side of the plywood sheet. Drill them using wood screws into place. Now keep the door over the cabinet structure, extend the hinges to one of the side panels and fix them to make them secure. Fix a hasp closure on the other side of the door, placing it in the center of the hinges.

Debbie, acm - Thank you very much for responding. This is a new apartment and not a remodel. I have attached the floor plan of the room & closet. In the photo below the closet is the space "DRESS" and having dimensions 5 ft 11" (X axis) x 4 ft 7" (Y axis). For representational purposes, the diagram shows an L shaped closet. Ignore that - this is a complete blank space. I am instead planning on putting the closet along the 5 ft 11" wall- but on the opposite side instead of the side shown in the diagram. So imagine my closet along a single wall, set against the wall marked with a thick dark line. acm - I did not mean a bi-fold. But rather the traditional shutter door which some may refer as a swing shutter. My dilemma is - should i use sliding doors or regular doors ? I divided my closet into 4 major compartments, each 1 ft 6" wide. So there are a total of 4 doors. Depth of closet is 2 ft. Hence walkthru space is 2 ft 6". When a closet door is open, there wld be 1 ft space between the open door & the wall. Within each of these 4 compartments, I have designed multiple external drawers upto 2 ft height from base. So the shutters/doors planned only for the portion above 2 ft. Sliding Doors - Pros - Swing space not needed. Can place a slim dresser in the corner if I want to later. Cons - Expensive as it will needlessly cover the bottom-most drawers; Sliding doors coming off rails. Regular Doors Pros - Inexpensive. Can be used to cover only the part above the drawers (need not cover drawers). This way I can open the drawers below quickly & easily. Cons - Not sure if 2 ft 6" is enough clearance space to open 18" doors. Hope this makes sense. What do you suggest?