Page 154 of Propane and Natural Gas Equipment by National Energy Equipment, Inc.

CANADAS LEADER IN ENERGY PRODUCTS EQUIPMENT  SIMPSON DURA-VENT Direct Vent 45 and 90 Elbows 45 Elbows NEE # Description Coating Height Width SD-945 45 Elbow Galvanized 4 1/4 4 1/4 SD-945B 45 Elbow Black 4 1/4 4 1/4 SD-990 90 Elbow Galvanized 6 1/2 6 1/2 SD-990B 90 Elbow Black 6 1/2 6 1/2 90 Elbows High Wind Termination Cap Standard Termination Caps For horizontal (through-wall) terminations only. Check installation instructions for restrictions on horizontal cap terminations such as minimum distance from windows and doors. High Wind Termination Caps may be required when high winds are present. May be required when high winds are present. For vertical installations only. Check the appliance manufacturers instructions to determine which caps are approved for which use with their appliance. Standard termination cap for vertical installations only. Check the appliance manufacturers instructions to determine which caps are approved for use with their appliance. The Snorkel is used when a vertical rise is desired in the system to meet appliance manufacturer recommended minimum heights. Do not enclose the Snorkel in the wall. Do not install below grade. For horizontal (thruwall) terminations only. Horizontal Square Termination Caps Low Profile Termination Cap Snorkel Termination Caps NEE # Description Depth Width Height Inside Diameter Outside Diameter SD-980 Low Profile Termination Cap for 4 x 6 5/8 Pipe - - 6 5/8 8 1/4 12 1/2 SD-984 Horizontal Square Standard Termination Cap for 4 x 6 5/8 Pipe 9 7/8 13 1/2 13 1/2 - - SD-985 Horizontal Square High Wind Termination Cap for 4 x 6 5/8 Pipe 9 7/8 13 1/2 13 1/2 - - SD-991 High Wind Termination Cap for 4 x 6 5/8 Pipe - - 12 3/8 6 5/8 10 1/2 SD-981 Snorkel Termination Cap for 4 x 6 5/8 Pipe. 36 Rise 10 13 1/2 49 - - SD-982 Snorkel Termination Cap for 4 x 6 5/8 Pipe. 14 Rise 10 13 1/2 27 - - These elbows feature a fully unitized twist-lock construction. The swivel elbow allows the lock to remain fully engaged while aligning the elbow in the desired direction. Use elbows to offset obstructions such as roof rafters or joists. The angle will remain fixed at 45 or 90 .

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