Delay ringing new firm to install small panelling (8)
I believe the answer is:
wainscot
'panelling' is the definition.
(I've seen this before)
'delay ringing new firm to install small' is the wordplay.
I cannot quite see how this works, but
'new' could be 'n' (common abbreviation eg NT for New Testament) and 'n' is found in the answer.
'firm' could be 'co' (a firm is a company) and 'co' is found within the answer.
'small' could be 's' (abbreviation - e.g. clothes size) and 's' is found within the answer.
'delay' could be 'wait' (synonyms) and 'wait' is found within the remaining letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for wainscot that I've seen before include "Lining of a wood-panelled wall" , "Panelling on lower part of interior walls" , "Old oak" , "Wooden room lining/panelling" , "Wood panelling on lower walls of room" .)