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Visible Opening per Row
3″ letter → 3¼"4″ letter → 4¼"6″ letter → 6¼"8 on 9″ letter → 8¼"8″ letter → 9¼"10″ letter → 11¼"
Track Profile Diagram
Top, Dual, and Bottom cross-sections with dimensions. Click to zoom.
Pronto Track
Extruded aluminum track system for mounting Pronto™ changeable letters. Available in Top, Dual, and Bottom configurations in 6′, 8′, and 10′ lengths. Installs with rivets or adhesive — no special tools required.
Key Features
- Extruded aluminum construction
- Top, Dual, and Bottom track configurations
- Available in 6′, 8′, and 10′ lengths
- Install with rivets or WELD-ON adhesive
- Dual track automatically spaces rows
- Compatible with all Pronto letter sizes (3″–10″)
- Expands/contracts with temperature changes
Pronto Track Installation Guide (PDF)
Installation
Accurate spacing is the key to a great Pronto changeable letter system. Use a chalk line and level to mark the location for your first piece of track.
Rivet Installation
- • Drill hole through track and background (max 8″ center to center)
- • For 1/8″–3/16″ background, drill 3/16″ diameter hole
- • Insert Pronto rivet, push pin to closed position
Adhesive Installation
- • Apply WELD-ON #3 or #4 to back of track
- • Use syringe or thin-needle bottle applicator
- • Tape in place until adhesive sets completely
Total Sign Height by Lines of Copy
Visible opening dimensions for standard track spacing.
| Lines | 3″ | 4″ | 6″ | 8 on 9″ | 8″ | 10″ |
|---|---|---|---|---|---|---|
| 1 | 5½" | 6½" | 6" | 8" | 9" | 10" |
| 2 | 10⅜" | 12⅜" | 16⅜" | 20⅜" | 22⅜" | 26⅜" |
| 3 | 15¼" | 18¼" | 24¼" | 30¼" | 33¼" | 39¼" |
| 4 | 20⅛" | 24⅛" | 32⅛" | 40⅛" | 44⅛" | 52⅛" |
| 5 | 25" | 30" | 40" | 50" | 55" | 65" |