Which description best matches a residential horizontal sidewall sprinkler?

Which description best matches a residential horizontal sidewall sprinkler?

• A. Sprinkler mounted vertically on ceilings
• B. Sprinkler mounted horizontally on sidewalls
• C. Sprinkler mounted on the floor
• D. Sprinkler mounted on a standpipe

Answer: (B)

Residential horizontal sidewall sprinklers are designed to be mounted on a wall with the head projecting into the room, discharging water horizontally. This wall‑mounted, side orientation allows coverage across the room from the side, which is different from ceiling-mounted sprinklers or floor/standpipe mounting. The description that matches this sprinkler is one where the head is on a sidewall, oriented to spray horizontally into the space.

Residential horizontal sidewall sprinklers are designed to be mounted on a wall with the head projecting into the room, discharging water horizontally. This wall‑mounted, side orientation allows coverage across the room from the side, which is different from ceiling-mounted sprinklers or floor/standpipe mounting. The description that matches this sprinkler is one where the head is on a sidewall, oriented to spray horizontally into the space.