Section 716 Opening Protectives - UpCodes | up.codes 0.5, 1/3, Maximum size tested, D-H-20, 1/3, D-H-20. Exterior walls, 3, 11/2, 100 sq. in.b, ≤100 sq. in. = D-H-90 >100 sq. in = D-H-W-90, Not Permitted ... https://up.codes/s/opening-protectives 8.3.3.2 Minimum Fire Protection Rating - UpCodes | up.codes 1/2, 1/3, Maximum size tested, D-20 or D-W-20, 1/3, 1/3, D-H-20, D-H-W-20, 1/3, 1/3, OH-20, W-30. Other Fire barriers, 3, 3, 100 in.2 a, ≤100 in.2, https://up.codes/s/minimum-fire-protection-rating