Dimensions Guide

SPECIFICATIONS
DORMER VENTS
WIDTH
FRONT
FLANGEFLANGE
HEIGHT
ROOF OPENING
LENGTH
SIDE
HEIGHT
FLANGE
FLANGE
ROOF OPENING
TOP
DORMER VENTS - 1/8th inch screen
SUB BASES
BH24-0.125
STDS24-2B-0.125
LPDG19-0.125
INSTALLATION GUIDELINES
Before installation, ensure that the substrate is uniform and even. Do not install venting products on uneven substrate. Installation shall be made in
basis for detail whenever applicable. Gibraltar Building Products ventilation products can be nailed or riveted using conventional hand or power
tools. Flashings shall be properly fastened to the substrate by means of wood or metal screws. When fastening dissimilar metals the use of stainless
steel is recommended. Use of neoprene washers or similar gasketing material is acceptable.
NOTE: Recommended use of this product is for exhaust of warm dry or slightly moist air only. This product is not intended for venting or exhaust
grease or liquid.
STANDARD MATERIALS
ASTM A653/A653M - G90 hot dipped galvanized steel, 28GA and 26GA.
ASTM D9092 - mill phosphatized coating for painting.
.125 x .125 hot dipped galvanized wire screen.
CODE
Conforms to Federal Spec. QQ-5775A, Type 1, Class 4 ASTM A-527.
Meets FHA codes.
PART# DESCRIPTION HEIGHT WIDTH ROUGH OPENING N.F.V.
3SBF1010S 18" Sub-Base - with screen n/a 16.5" 12" x 9" 110 sq. in.
STD18SJ 18" Sub-Base - no screen n/a 16.5" 10.5" x 10.5" 110 sq. in.
3SBF1414S 24" Sub-Base - with screen n/a 22.5" 14" x 14" 196 sq. in.
STD24SJ 24" Sub-Base - no screen n/a 22.5" 14" x 14" 196 sq. in.
#BH24-1/8
#LPDG19-1/8 #LPDH18-1/8
#LPSD20-1/8 #STDS24-2B-1/8
PART# DESCRIPTION HEIGHT WIDTH ROUGH OPENING N.F.V.
BH24-1/8 12" x 24" Square Tail 12" 24" 12" x 9" 100 sq. in.
LPDG19-1/8 19" Low Prole 4" 19" 19" x 10" 43 sq. in.
LPDH18-1/8 18" Low Prole 7" 18" 18" x 10" 81 sq. in.
LPSD20-1/8 20" Low Prole (Simpson) 2.75" 20" 19" x 10" 48 sq. in.
STDS24-2B-1/8 12 x 24 Soft Aluminum - 2 Sides 12" 24" 12" x 9" 100 sq. in.

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