The installation costs for dock doors and curtains can vary widely based on several factors, including the type, size, and material of the doors and curtains, as well as labor costs in your area. 
1. **Dock Doors:**
   - **Types:** Common types include sectional doors, rolling steel doors, and high-speed doors. Each type has different cost implications.
   - **Material:** Steel, aluminum, and insulated doors have different price points, with insulated doors generally costing more.
   - **Size:** Larger doors require more materials and labor, increasing costs.
   - **Installation:** Professional installation is recommended, with labor costs varying by region. On average, installation can range from $500 to $1,500 per door.
   - **Total Cost:** Including materials and installation, dock doors can range from $1,000 to $5,000 per door.
2. **Dock Curtains:**
   - **Types:** Options include strip curtains, roll-up curtains, and sliding curtains.
   - **Material:** Vinyl is a common material, with thickness and durability affecting cost.
   - **Size:** Larger curtains will cost more due to increased material use.
   - **Installation:** Installation is generally simpler than doors, but professional installation is still advisable. Labor costs can range from $200 to $500.
   - **Total Cost:** Including materials and installation, dock curtains can range from $500 to $2,000.
Additional costs may include permits, customization, and any necessary structural modifications. It's advisable to obtain multiple quotes from suppliers and contractors to get a more accurate estimate tailored to your specific needs.