Bevel to side walls

Inclined to side walls

Horizontal to side walls

Floor and fixed walls

To fix the shutter

To fix window shutter

To fix protection bar

To fix the grill

Appearance

Avoid terminals

Quick opening

Receive the door shutter

Strength, durability and lightness

Cost of the plywood are also too high

Less attract by insects and fungus

Less receiving of preservatives

Burn the wood

Wear the wood

Crack the wood

Check the wood