What size grow tent fits your space?
A tent’s outside dimensions are only the beginning. Use this measuring sequence to check the floor, usable height, doors and equipment before choosing a grow tent.
1. Measure the space with its obstacles
Measure the width, depth and ceiling height where the tent will stand. Include skirting boards, pipes, radiators and any sloping ceiling. Check the route to that spot as well: you need to position and maintain the assembled tent. Leave room for ducts passing through side or roof openings.
Mark the intended footprint with tape. Stand in front of it as if you were watering or tending plants. Can the doors open, and can you reach the back? A tent that just fits between two walls may be awkward to use.
2. Compare actual outside dimensions
The Mammoth Lite+ 60 is 60 × 60 × 140 cm. The Lite+ 100 is 100 × 100 × 180 cm, whereas the Pro+ 100 has the same footprint and is 200 cm tall. At 120 × 120 cm, Lite+ 120 and Pro+ 120 are 200 cm tall; Pro+ HC 120 is 225 cm tall.
Use these dimensions to check your available space. They describe the tent, not a guaranteed plant count or yield. Read our Lite+ 100 and Pro+ 100 comparison if a one-square-metre footprint is your starting point.
3. Calculate the space above your pots
Add the pot and tray, intended plant height, required light distance, light thickness and hangers. Record each measurement in centimetres. Plan where the filter, ducts and cables sit. Parts beside the light do not need to be counted twice in the vertical stack, but everything still needs to fit.
Set the light distance for the actual model and intensity setting. There is no universal distance for all LED grow lights. A taller tent only helps if the room can accommodate it. Compare Pro+ HC when 200 cm leaves too little room.
4. Choose a layout you can reach
With a square tent, check whether you can reach every pot from the door. A rectangular model such as Pro+ 120L at 120 × 60 × 160 cm may fit a narrow space, but needs a different lighting and airflow layout. Check the door positions on the exact version.
Base the floor layout on your pots and trays, leaving working room. Do not simply divide floor area by an assumed area per plant: plant shape and care requirements change what makes a usable layout.
5. Check the installation before ordering
Check frame load limits, light dimensions, hanging points and opening diameters for each model. Plan the filter, fan and ducts together. A controller sensor is not a standalone thermo-hygrometer; check the required connection before choosing accessories.
Compare our grow tents or start with the tent configurator. For a kit, use the complete grow tent checklist to review included equipment and additional supplies.