
Optional High Wind Termination Cap Secure Flashing with Non-Hardening Sealant and Roofing Nails Figure 5.15 Step 9. Twist-lock the vent cap and seal. Note: For multi-story vertical installations, a ceiling firestop is required at the second floor, and any subsequent floors (Figure 5.16). The opening should be framed to 10 in. x 10 in. (254mm x 254mm) inside dimensions, in the same manner as shown in Figure 5.13 on page 16. MIN. 1 in. (25mm) CLEARANCE CEILING FIRES TOP NAILS MIN. 1 in. (25mm) CLE