Mitsubishi Electric FCU Plenums — PEAD Ducted Range
Mitsubishi Electric's PEAD ducted units are a staple of UK commercial air conditioning — concealed in ceiling voids, ducted to grilles, and every installation needing plenum boxes made to match. Our 3D plenum builder includes starting presets for PEAD-M35 through PEAD-M140: pick the model, verify against your unit drawing, set the spigot layout for your grille positions and send the design to us for a quote.
Plenums that suit the PEAD's shallow static
PEAD units are selected with modest external static pressure, so plenums and connected ductwork must waste as little of it as possible. A box made to the unit's actual flange size with smooth transitions and correctly sized spigots protects the airflow the unit was selected for. Stepped or tapered bodies, acoustic lining and return-side filter sections are all standard options in the builder.
From single units to full floors
One PEAD-M50 above a meeting room or a whole floor of M100s — each box is fabricated to order and labelled to your schedule. Design the supply plenum, copy it to the return side in one click, and repeat per unit type. For the rest of the connection, see our FCU ductwork page, or send us your schedule.
Frequently asked questions
Which Mitsubishi Electric units do you make plenums for?
The builder includes starting presets for the PEAD-M ducted range (M35 to M140), and because every dimension is adjustable we can fabricate for any Mitsubishi Electric ducted unit — including SEZ compact units and older PEAD ranges. Check preset sizes against the certified unit drawing before ordering.
Can you match the plenum to my grille layout?
Yes — in the 3D builder you place each spigot exactly where your layout needs it, on any face of the box, and the design records every position in millimetres. Quick-layout buttons place two or three evenly spaced spigots in one click as a starting point.
Do you line plenums for noise control?
Acoustic and thermal lining options are available in the builder — useful above quiet spaces where PEAD fan noise needs attenuating before the ductwork. Pick the lining option that matches your specification, or ask us for guidance.
How do I get a price for Mitsubishi FCU plenums?
Design the box in the 3D builder and add it to a quote request — the full specification and a picture of the design come straight to us. For a floor's worth, send the PEAD schedule with quantities through the contact page and we'll price the set.