DIY frame choice

L Frame vs Z Frame Plantation Shutters

Quick answer: L frame is a simple frame choice for suitable inside or outside mount openings. Z frame is often more forgiving for inside mounts where you want the frame to cover small gaps, uneven edges or out-of-square reveals.

When L frame suits

L frame suits clean openings where the frame can sit squarely and the surrounding trim does not interfere with the shutter.

When Z frame suits

Z frame can help cover reveal edges and small gaps, making it useful for older openings, uneven reveals or inside mounts that need a more forgiving finish.

Architrave and tiles

Architrave, tiles and nearby handles can affect whether a frame sits cleanly. Check photos and measurements before production if anything looks tight.

Get advice before ordering

Frame advice is based on the photos and information you provide. It is not an on-site measure or fit guarantee, so final millimetre measurements remain your responsibility.