DEI Floor and Tunnel Shield II is a high-heat barrier that blocks radiant heat from intruding into interiors and damaging components, ideal for firewalls, transmission tunnels, floor boards and fuel cells. An embossed 10mil aluminum face is bonded to a 1/8in composite glass-fiber core with a high-temp pressure-sensitive backing, withstanding 1750°F (adhesive holds past 450°F). At only 3/16in thick it trims and forms to fit, and adds sound deadening. This piece is 42in x 4ft (14.0 sq ft). Aluminum side must face the heat source; do not apply directly to exhaust components.
Specifications
| Type | Floor and Tunnel Shield II (self-adhesive) |
| Material | Embossed 10mil aluminum / glass-fiber core |
| Size | 42in x 4ft (14.0 sq ft) |
| Thickness | 3/16in |
| Temp Rating | 1750°F (adhesive past 450°F) |
| Part Number | 50503 |
Documents: Installation Instructions (PDF)
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
